Preparation method of racemic homocitric acid lactone

White light luminous diode and fluorine oxide fluorescent powder thereof

The invention relates to a fluorine-oxide fluorescent powder which uses fluorine-oxide with cubic lattice garnet structure and illinium and aluminium oxide component as a base and cerium as an activator. The powder is characterized in that: the components of the fluorescent materials of the fluorescent power are added with the fluorine and the chemometric equation is that Y3-xCeAl2(AlO4-Gamma Fo)GammaFi)3, wherein, Fo- are the fluorine ions on the nodes of oxygen crystal and Fi- are the fluorine ions among the nodes of the cystal. The activator of the fluorescent powder is cerium ion Ce<+3> which can be excited by quantum radiation or energetic particle radiations with energy of 2.8eV to 1MeV; the maximal value of the spectral radiance thereof is Lambada equal to 538nm to 548nm and semiwave width Lambada0.5 equal to 109nm to 114nm. In addition, the invention also discloses a spectrum converter, a semiconductor light source, flickering fluorescent powder, a flickering sensor and ...

Set top box capable of speaking

The utility model discloses a set top box capable of speaking, relates to the related field of set top boxes, and aims to solve the problem that dust cannot be prevented from being accumulated on the set top box in the prior art. The device comprises a device shell, two side protection plates are arranged on one side of the device shell, the side protection plates are attached to the device shell, the side protection plates are connected with the device shell through bolts, a plurality of connecting blocks are arranged on one side of each side protection plate, each connecting block is in a rectangular block shape, and the connecting blocks are connected with the device shell through bolts. The connecting blocks are fixedly connected with the side protecting plates, connecting plates are arranged on one sides of the connecting blocks, the number of the connecting plates is consistent with that of the connecting blocks, the connecting plates are fixedly connected with the connecting blocks ...

Encapsulation structure of LED

The invention relates to an encapsulation structure of the LED, including a base; a chip; a first material arranged on at least one side of the chip with a first light reflectance coefficient; a second material arranged on the upper side of the chip with a second light reflectance coefficient, wherein an interface is arranged between the first material and the second material which can refract the light refracted by the first material; and a spherical lens arranged on the upper side of the second material, forming a closed space with the base. The light generated by the chip can be emitted by the spherical lens after being refracted through the first light reflection material and the second light reflection material.

Three frequency bands fluorescent powder used for multilayer agricultural film

The invention relates to a tri-band fluorescent powder used for a multi-layer agricultural film, wherein the tri-band blue-green-red fluorescent powder converts the near ultraviolet rays of photosynthetic active radiation. The matrix of the tri-band fluorescent powder is orthosilicate of the group IIA elements, the general chemical stoichiometric equation is (SigmaMe<+2>O) 2alpha (SiO2)alpha, wherein alpha=1, 2, or 3, SigmaMe<+2> is Ba<+2>, Sr<+2>, Ca<+2> and Mg<+2>, the structure of the fluorescent powder is a cubic crystal structure, the catalyst is Eu<+2>, Sm<+2>, and Mn<+2>, and the area of the maximal value of the tri-band radiation is that lambda1=440-460nm,lambda2=515-535nm, lambda3=626-640nm. The maximal value of each spectral intensity and the maximal value of the semi-wave depend on the concentration of the catalyst and the synthetic technology of the fluorescent powder. The tri-band fluorescent powder is prepared through solid-phase synthesis, and exists in a form of scattered ...

Warm white LED and halogenide fluorescent powder thereof

The invention relates to halide fluorescent powder, which is low color temperature halide nitride fluorescent powder on the basis of rare earth oxide garnet and adopts cerium as an activator. The halide fluorescent powder is characterized in that chlorine ions Cl<-1> and nitrogen ions N<-3> are added into compositions of the fluorescent powder; and the chemical formula formed is (SigmaLn<+3>)3Al2[(Al(O1-2pClpNp)4]3, wherein SigmaLn is equal to Y and/or Gd and/or Tb and/or Lu and/or Dy and/or Pr and/or Ce. Moreover, the invention also discloses a warm white light-emitting diode which uses the nitride fluorescent powder, and the weight ratio of the warm white light-emitting diode is between 8 and 75 percent. When the power of the light-emitting diode is 1 watt, the warm red luminescent color temperature T is less than or equal to 3,000 kelvins.

White light LED and lighting conversion layer thereof

The invention relates to a white light emitting diode (LED), which is based on an In-Ga-N nitride heterojunction. The white LED is characterized in that the LED can radiate a primary blue light with a specific wavelength and has an emitted light conversion layer for converting the blue light to white light. The invention also discloses an emitted light conversion layer and oxyfluoride garnet phosphor powders used by the emitted light conversion layer.

White light emitting diode and sulphide fluorescent material thereof

Blue-green luminous semiconductor and fluorescent powder thereof

The invention provides a blue-green luminescent semiconductor, which comprises an In-Ga-N heterojunction of the semiconductor that is covered by a thermosetting polymer and a translation layer composed of inorganic phosphor powder with long-wave stokes radiation displacement. The invention is characterized in that the emissive wavelength of the In-Ga-N heterojunction of the semiconductor in the near ultraviolet spectrum area is that Lambada is equal to 375-405nm, which becomes 505-515nm after the translation layer transmits strong inversion radiation; the stokes displacement is 135-105nm; thecolor coordinate is located in the ranges that x is more than 0.15 and no more than 0.22 and y is more than 0.55 and no more than 0.60; the width of the semiwave of curve of spectrum is no more than 60nm; and the duration of luminescent afterglow is less than 100ns. Besides, a fluorescent powder used for the blue-green luminescent semiconductor is also disclosed.

Tricolor nancarbon tube field emission display screen

The invention relates to a field-emission display screen of a red-blue-green nanometer carbon tube with total chromatic system, which is composed of three separated cathodoelectrolumine fluorescent screens, an anode plate and a cathode plate, wherein transparent oxide thin film is adhered on an optical gate electrode of the anode plate, an electron source which is emitted from the optical gate electrode of the cathode plate impacts the cathodoelectrolumine fluorescent screens with the variation of the electric field of the gap between the cathode plate and the anode plate, the display screen is characterized in that the cathodoelectrolumine fluorescent screens are made of rare-earth elements capable of being activated, and thereby the stability and the uniformity of the luminosity of the fluorescent screens are guaranteed under the activating of electron beams.

Warm white semiconductor and fluorescent powder with red garnet structure

The invention provides a warm white light semiconductor and a phosphor with the structure of red spectrum garnet; the warm white light semiconductor is at least provided with a semiconducting heterojunction and a light emitting conversion layer; the semiconducting heterojunction contacts the light emitting conversion layer; the warm white light semiconductor is characterized in that a warm white light emitting system consists of three spectrums that is associated with catalysts Ce and Pr in inorganic phosphor of the light emitting conversion layer and the radiation of Dy; the chemical quantitative formulae of the phosphor is (Y2-x-y-z-pGdxCeyPrzDypO3)1.5 plus or minus alpha(Al2O3)2.5plus or minus beta, wherein, x is more than or equal to 0.001 and less than or equal to 0.4, y is more thanor equal to 0.01 and less than or equal to 0.2, z is more than or equal to 0.0001 and less than or equal to 0.1, p is more than or equal to 0.0001 and less than or equal to 0.1, alpha is more than orequal ...

Router capable of switching multiple set top box DVD signal sources at home

The utility model discloses a router capable of switching a plurality of set top box DVD signal sources at home, relates to the technical field of routers, and aims to solve the problems that the number of interfaces arranged on the router is limited, the signal sources are connected with the interfaces on the router, frequent plugging and unplugging are needed when the signal sources are switched, the interfaces are easy to loosen and damage, and the switching efficiency is high. The subsequent contact is poor, and the use effect is influenced. An upper cover plate is arranged above the shell, the upper cover plate is connected with the shell through screws, PCB processing equipment is arranged in the shell, the PCB processing equipment is connected with the shell through screws, a front end plate and a rear end plate are arranged on the two sides of the shell respectively, and the front end plate and the rear end plate are connected with the shell through screws. One side of the front ...

Warm white LED and fluorescent powder thereof

The invention relates to a warm-white-light emitting diode (LED), which adopts an indium-gallium nitride heterojunction as a substrate, contains a large quantity of quantum wells in the composition and is provided with a poly emitting conversion layer. The warm-white-light emitting diode is characterized in that: the poly emitting conversion layer exists in the state of even consistency; the edgeand the emitting surface of the indium-gallium nitride heterojunction are coated with a thermoset polymer; the poly emitting conversion layer contains a large quantity of fluorescent powder grains; these grains exist in the poly emitting conversion layer in the form of at least two grain layers to ensure that part of the transmission can reach 20% of the first-grade blue-light radiation of the indium-gallium nitride heterojunction and 70% to 80% of the second-grade orange-light radiation. Besides, the invention also discloses a fluorescent powder.

Natural light energy battery and transparent light conversion layer

The invention relates to a natural light energy battery which can enhance the absorption of solar shortwave radiation with the wave band of lambda<400nm and reradiate in the wave band of lambda equals to 500-780nm so as to enhance the capacity of a solar battery component for absorbing more long wave radiation, form separated p-n electron-hole pairs and additionally increase the power output electricity of the solar battery component. Moreover, the natural light energy battery also provides a transparent light conversion layer used in the natural light energy battery.

High brightness yellow-orange yellow fluorescent powder used for warm white semiconductor

The invention provides a high-brightness yellow-orange fluorescent powder used for a warm white semiconductor, wherein rare earth element garnet is adopted as the matrix of the fluorescent powder which is activated by cerium. The invention is characterized in that ions of the 1st, the 2nd, and the 5th groups of the periodic system, including Li< +1 >, Mg< +2 > and N< -3 >, are added to the fluorescent powder, to form the material with the following chemical stoichiometric equation: Sigma(Ln) 3Al5-xLi (x+y) Mg (x+y) O12-3yN3y, wherein the atom fraction is SigmaLn=Sigma(Y+Gd+Ce+Dy+Pr)=1, x is more than or equal to 0.0001 and less than or equal to 0.15, y is more than or equal to 0.0001 and less than or equal to 0.15,when the fluorescent powder is excited by the short-wave light emitted by the interface of an InGaN semiconductor, visible light orange is radiated by different wave bands at the wavelength lambda=538-569nm.

Method for forming arginine self-assembly corrosion inhibition film on copper surface

The invention discloses a method for forming an arginine self-assembly corrosion inhibitor film on the copper surface, comprising the steps as follows: a. pure copper is gradually ground and polished from 1# to 6#, deoiled by anhydrous alcohol, cleaned by deioned water and prepared for use; b. the arginine solution with the concentration of 1*10-1*10mol/L and the KI solution with the concentration of 5*10mol/L compose a mixed self-assembly solution; and c. the copper is dipped in the mixed self-assembly solution, with the dipping temperature of room temperature and the assembly time of 2-6 hours. The adopted corrosion inhibitor arginine is a green and environment-protective corrosion inhibitor and harmless to the environment. The electro-chemical data indicates that the best assembly concentration of the arginine assembly solution is 10mol/L; and when iodine ions are added in the assembly solution, the corrosion inhibition efficiency of the assembly film is greatly improved.

Copper pickling and environment-friendly corrosion inhibitor

The invention relates to an environment-friendly corrosion inhibiter of copper used in acid medium, made by combining methionine and zinc ion, wherein, the concentration of methionine ranges from 5mM to 14mM, and the concentration of zinc ion is within 0.05mM to 12.5mM. When the concentration of single methionine is 12mM, the effect is the best; while 12mM methionine is compounded with 0.5mM zincion, the effect of the corrosion inhibiter is much better. When the corrosion inhibiter made from 12mM methionine and 0.5mM zinc ion according to the invention is put into the 0.5M hydrochloric acid,the corrosion current of the copper is greatly reduced and the inhibition efficiency is about 91.96 percent. The corrosion inhibiter has low cost, is environment-friendly, causes the environment lessharm and has distinct inhibition effect on the copper.

Rhodium base catalyst for preparation of low carbon alcohol by synthetic gas and its preparing method

The present invention provides a rhodium-based catalyst in preparation of low-carbon alcohol by using synthetic gas and its preparation method. Said invented catalyst is made up by adopting fractional impregnation and fractional reduction method, and the composition of said catalyst is: M/Rh - Mn -Fe/SiO2, M = Na, Li; Rh capacity is 2.0% (wt): and the atomic ratio of M/Rh, Mn/Rh and Fe/Rh respectively is 3.8-21.8, 0.5-1.5 and 0.2-0.4. For said invented catalyst, under the conditions of 220 deg. C, 0.1 MPa, S. V. =1000h (-1) and CO/H2 = 1/2.2, the total selectivity of oxycompounds of methyl alcohol. ethyl alcohol, acetaldehyde and propyl acohol, etc. is up to above 90%, in which C2 oxycompound selectivity is up to 86%.

Water soluble catalyst loaded on high carbon aldehyde by hydrogen formylating high carbon nuber terminal olefine

A kind of high carbon aldehyde load type water soluble catalyst is made by high carbon number terminal olefine hydrogen formylating of sulfonated triphenyl phosphine-rhodium compound promoted by alkali metal or alkaline earth metal chloride, the product contains water soluble sulfonated triphenyl phosphine-rbodium compound and alkali metal or alkaline earth metal chloride, the content of metal chloride in the catalyst is 5-1000 times (mole ratio) that of rhodium; when high carbon number terminal olefine continues to hydrogen formylate on a fixed bed flow reactor, the reaction condition is moderate, owing to the addition of alkali metal or alkaline earth metal chloride, the time space production rate can be raised by a factor of 2, and the selectivity of normal olefine product is also raised, the performance of the catalyst is stable.

Orthosilicate green phosphor for light emitting diode and preparation thereof

The invention relates to the field of radiation materials, in particular to orthosilicate fluorescent powder. Part of O<-2> in a silanoxide tetrahedron is replaced, the orthosilicate fluorescent powder has a P2nn crystal structure and gives off green radiation under the strong shortwave radiation excitation of InGaN heterojunction, wherein the maximum spectrum depends on the interrelation between the amount of Me<+2> or Ln<+2, 3> in a cation crystal lattice, and the intensity is determined by the amount of the atom O<-2> in the component which is replaced in the V, the VI and the VII families and is taken from the series of F, Cl, Br, I, S, Se, N and P. The orthosilicate fluorescent powder has two excitation wave zones of which the range is between 360 and 400 nanometers and between 450 and 490 nanometers, and the materials are used for establishing a bright and effective green LED by using a nitride heterojunction as a substrate.

White-light diode, synergistic light conversion powder, fluorescent powder and preparation of fluorescent powder

The invention relates to a white light diode, synergistic light conversion powder, fluorescent powder and a method for preparing the fluorescent powder, wherein a nitride heterojunction which can radiate a plurality of colors of light (comprising white light) is applied. The invention provides a novel fluorescent material which takes Bax(Y1-y-zGdyCez)3Al5+2xO12+4x as a chemical formula and has a solid solution form, wherein x is between 0.01 and 10, y is between 0 and 1, and z is between 0.005 and 0.1. The novel fluorescent material is remarkably characterized by showing strong yellow and yellowish orange and having high quantum luminance and durable luminescence time. Based on the novel fluorescent powder, the invention further researches and develops a synergistic light conversion device which has effect on heterojunction radiation of blue light of which the wavelength lambda is between 400 and 500nm.

Catalyst for making ethylene from ethane oxidative dehydrogenation

White light emitting diode and sulphide fluorescent material thereof

The present invention relates to fluorescent sulphide powder. A garnet architecture is combined with rare earth oxide element into a matrix, and cerium is used as activator. The fluorescent sulphide powder has the following characteristics: two types of sulphions, the oxidation degree of which is less than or equal to plus 6, are introduced into the components of a cationic crystal lattice to replace part of aluminum ions Alplus 3 and oxygen ions O-2 in the (AlO4) architecture; the stoichiometric equation is (sigma Ln)3Al2(Al1-x-ySplus mxMeplus1, 2yO4-zS-2z)3; mainly, gadolinium Gd and/or terbium Tb and/or Lu are introduced into the cationic crystal lattice; within the orange-red spectrum field, the luminous radiation wavelength is Lambada equal to 390nm to 480nm; and the half-wave width of wave radiation is Lambada 0.5 equal to 125nm to 136nm. In addition, the present invention also discloses a white-light-emitting diode and a method for preparing the fluorescent sulphide powder.

Warm-white light-emitting diode and fluorescent powder having orange radiation thereof

The invention relates to a fluorescent powder with orange radiation, which is applied in a warm white light-emitting diode. The fluorescent powder utilizes rare-earth garnet to be substrate and utilizes cerium to be activator, which is characterized in that the fluorescent powder has constant radiation maximum value under the excitation of short-wave light which originates from nitridation arsenic gallium, the total stoichiometric formula is (sigma Ln)3Al5O12, wherein sigma Ln=Y=Gd=Lu=Yb=Eu, Ce, Pr, Sm, Dy or Er can be utilized as activation element. The composition of the fluorescent powder of the invention guarantees constant maximum value of radiation spectrum, and guarantees higher radiation light intensity in utilizing an InGaN light-emitting diode, and light-transporting efficiency is 50-801m/w. In addition, the invention also discloses a warm white light-emitting diode.

Red light nano fluorescent powder used for agriculture and preparation method thereof

The present invention relates to one kind of nanometer red light emitting phosphor powder for agricultural use. The nanometer red light emitting phosphor powder includes europium activated RE oxysulfide and added lanthanum oxide, and has nanometer pores and proper specific surface area. It is applied for different kinds of indicator, detector and light converting agricultural film, and possesses extremely high radiation intensity. The present invention also reveals the preparation process of the nanometer red light emitting phosphor powder for agricultural use.

Encapsulation structure for LED and method thereof

The invention provides a packing structure of a luminescent diode, which comprises a crystal particle capable of emitting electroluminescence, solder paste layers which are tightly arranged on the bottom and the periphery of the crystal particle and enables the crystal particle to be combined with at least one support, and a heat conducting layer which is tightly arranged on the bottom of the solder paste and can provide the heat conducting approach of the crystal particle. With the structure, the packing heat resistance of the luminescent diode can be greatly reduced, and furthermore, the invention further provides a method for packing the luminescent diode, which can greatly reduce the packing heat resistance of the luminescent diode.

Solar cell and its luminous converting layer

The present invention relates to a solar cell, which makes the monocrystalline silicon piece as a base, includes a electrode system, a polymerization film connecting with the monocrystalline silicon piece, and a glass piece covered on the polymerization film, which is characterized in that: the solar cell further includes a luminous converting layer, further more the luminous converting layer is stuffed with inorganic fluorescent powder, the inorganic fluorescent powder can adsorb radiating in the purple, blue and green optical spectrum region, and shines in yellow, orange yellow and infraredregion of the electromagnetic wave spectrum to increas the efficiency of the solar cell. The structural feature of the solar cell of the present invention can assure increasing 1.2 times of the battery efficiency than that of the original.

White light luminous diode and iodide garnet phosphor powder thereof

The invention relates to a white light luminous diode and iodide garnet phosphor powder thereof, wherein the iodide garnet phosphor powder takes a rare earth oxide element of a garnet framework as a matrix. The iodide garnet phosphor powder is characterized in that iodide ions I-1 and silicon ions Si+4 are added and introduced to the phosphor powder material, and electrons are compensated mutually in anion crystal lattices, thereby forming the following chemometry formula: (SigmaLn)3Al2[Al1-xSixO4-xIx)]3, wherein SigmaLn is equal to Y and/or Gd and/or Tb and/or Lu and/or La and/or Ce and/or Pr; the radiation wave of the phosphor powder can generate long wave displacement under the excitation of an InGaN semiconductor heterojunction. In addition, the invention also discloses a method for preparing the iodide garnet phosphor powder.

Light-accumulation fluorescent powder and manufacturing method thereof

The invention relates to a light-storage phosphor, which adopts aluminate with the elements of IIA group to be substrate and is activated by europium ion(Eu<+2>) and lanthanum ion(La<+3>), and the phosphors are characterized in that the elements of VII group F<-1>, Cl<-1> and Mn<2> are added into the components of the phosphors, the chemical measuring molecular formula of which is (Me1-xEuxO)Alpha(Al2-y-zLn<+3>yMn<+2>zO3-zHalz)Beta, wherein Me is equal to Sr and/or Ba and/or Ca and/or Mg, Ln is equal to Dy and/or Nd and/or Ce, Hal is equal to F and/or Cl, moreover, the invention also provides the producing method of the light-storage phosphors, which is the fused mass from alkali, then temperature treatment is given to hydroxide in weak reduction gas so as to keep the friability of products.

Encapsulation structure of LED

The invention relates to an encapsulation structure of the LED, including a base; a chip; a first material arranged on at least one side of the chip with a first light reflectance coefficient; a second material arranged on the upper side of the chip with a second light reflectance coefficient, wherein an interface is arranged between the first material and the second material which can refract the light refracted by the first material; and a spherical lens arranged on the upper side of the second material, forming a closed space with the base. The light generated by the chip can be emitted by the spherical lens after being refracted through the first light reflection material and the second light reflection material.

Silicon solar battery with polymer ribbon radiative transition coating

The invention relates to a silicon solar battery with a radiative transition layer polymer. The radiative transition layer polymer is formed by a polymerized binder filled with two kinds of fluorescent powder. The silicon solar battery is characterized in that the fluorescent powder in the radiative transition polymer strongly absorbs short wave and long wave solar radiation and converts the solar radiation into the radiation in the orange-yellow, near infrared and middle infrared spectrum zones.

Copper pickling and environment-friendly corrosion inhibitor

The invention relates to an environment-friendly corrosion inhibiter of copper used in acid medium, made by combining methionine and zinc ion, wherein, the concentration of methionine ranges from 5mM to 14mM, and the concentration of zinc ion is within 0.05mM to 12.5mM. When the concentration of single methionine is 12mM, the effect is the best; while 12mM methionine is compounded with 0.5mM zinc ion, the effect of the corrosion inhibiter is much better. When the corrosion inhibiter made from 12mM methionine and 0.5mM zinc ion according to the invention is put into the 0.5M hydrochloric acid, the corrosion current of the copper is greatly reduced and the inhibition efficiency is about 91.96 percent. The corrosion inhibiter has low cost, is environment-friendly, causes the environment less harm and has distinct inhibition effect on the copper.

Fluorescent powder with gadolinium-lutetium-cerium as substrate and warm white light emitting diode using the same

The invention relates to fluorescent powder using cerium, gadolinium and lutetium as a substrate, which is characterized in that F ions and N ions are added to the fluorescent powder to replace oxygen ions in part of garnet crystal lattices and the chemical formula of the fluorescent powder is (Gd1-x-yLuxCey)3Al5O12-zFz/2Nz/2, and the fluorescent powder can be radiated in the range of a salmon pink spectrum region after the shortwave excitation of indium gallium mononitride (InGaN) semiconductor heterojunction. Furthermore, the invention also discloses a warm white light emitting diode which adopts the fluorescent powder using the cerium, the gadolinium and the lutetium as the substrate, wherein when the semiconductor heterojunction radiation of which the wavelength lambda is equal to between 420 and 500 nanometers is excited, the maximum spectrum lambda of the fluorescent powder is more than 575 nanometers in the salmon pink light luminescence, the semi-wave width is more than 135 nanometers ...

Warm white LED and fluorescent powder thereof

The invention relates to a warm-white-light emitting diode (LED), which adopts an indium-gallium nitride heterojunction as a substrate, contains a large quantity of quantum wells in the composition and is provided with a poly emitting conversion layer. The warm-white-light emitting diode is characterized in that: the poly emitting conversion layer exists in the state of even consistency; the edge and the emitting surface of the indium-gallium nitride heterojunction are coated with a thermoset polymer; the poly emitting conversion layer contains a large quantity of fluorescent powder grains; these grains exist in the poly emitting conversion layer in the form of at least two grain layers to ensure that part of the transmission can reach 20% of the first-grade blue-light radiation of the indium-gallium nitride heterojunction and 70% to 80% of the second-grade orange-light radiation. Besides, the invention also discloses a fluorescent powder.

Warm white semiconductor and fluorescent powder with red garnet structure

The invention provides a warm white light semiconductor and a phosphor with the structure of red spectrum garnet; the warm white light semiconductor is at least provided with a semiconducting heterojunction and a light emitting conversion layer; the semiconducting heterojunction contacts the light emitting conversion layer; the warm white light semiconductor is characterized in that a warm white light emitting system consists of three spectrums that is associated with catalysts Ce and Pr in inorganic phosphor of the light emitting conversion layer and the radiation of Dy; the chemical quantitative formulae of the phosphor is (Y2-x-y-z-pGdxCeyPrzDypO3)1.5 plus or minus alpha(Al2O3)2.5plus or minus beta, wherein, x is more than or equal to 0.001 and less than or equal to 0.4, y is more than or equal to 0.01 and less than or equal to 0.2, z is more than or equal to 0.0001 and less than or equal to 0.1, p is more than or equal to 0.0001 and less than or equal to 0.1, alpha is more than or equal ...

Blue-green luminous semiconductor and fluorescent powder thereof

The invention provides a blue-green luminescent semiconductor, which comprises an In-Ga-N heterojunction of the semiconductor that is covered by a thermosetting polymer and a translation layer composed of inorganic phosphor powder with long-wave stokes radiation displacement. The invention is characterized in that the emissive wavelength of the In-Ga-N heterojunction of the semiconductor in the near ultraviolet spectrum area is that Lambada is equal to 375-405nm, which becomes 505-515nm after the translation layer transmits strong inversion radiation; the stokes displacement is 135-105nm; the color coordinate is located in the ranges that x is more than 0.15 and no more than 0.22 and y is more than 0.55 and no more than 0.60; the width of the semiwave of curve of spectrum is no more than 60nm; and the duration of luminescent afterglow is less than 100ns. Besides, a fluorescent powder used for the blue-green luminescent semiconductor is also disclosed.

Inorganic luminescent material of ultraviolet solid light source

The invention provides an inorganic luminescent material of ultraviolet solid light source, wherein, the inorganic luminescent material is silicate-based inorganic luminescent material of the ultraviolet luminescent solid, the chemical composition of which is (SraEubSmcYbd)2(CaeMnfSngCuh)(LukYmGdnScpYbqCerEusTbtSmwDyx)2O6(SiO2)3 plus or minus Delta, wherein, the luminescent center part consists of series of cation of +2 valence such as Eu<+2>, Sm<+2>, Yb<+2>, Dy<+2>, Mn<+2>, Sn<+2> and Cu<+2>; the other part of the luminescent center consists of ion series of +3 valence distributed in the cation, such as Ce<+3>, Eu<+3>, Tb<+3>, Sm<+3> and DY<+3>; when chemical index Delta is more than or equal to 0 and less than or equal to 0.2, multi-band white light with the light radiation wavelength Lambda less than or equal to 430nm and the color temperature T between 2500K and 12000K under the excitation state of InN-based and GaN-based semiconductor heterojunction shortwave ultraviolet.

Bad detector of hardware of HDMI interface outlet circuit

The utility model discloses a bad detector of hardware of HDMI interface outlet circuit, including detector interface, LED lamp, resistance and detector shell, detector shell one side is provided withthe detector interface, the detector interface is used for the junctor top box and detects, the detector shell is inside to be provided with the LED lamp, the LED lamp is connected with resistance, detector interface connection the HDMI line, the other end of HDMI line is connected with the STB. Beneficial effect lies in: the utility model discloses can conveniently inspect out STB HDMI hardwarecircuit, unfavorable conditions such as the continuous tin electrodeposit short circuit that produces at the factory production in -process and rosin joint.

Warm white luminous diode and orange fluorescent powder thereof

The invention relates to an orange-yellow fluorescent powder which is a rare earth aluminate with a garnet structure and characterized in that: the components of the fluorescent powder are added with compounds of elements of IV and V families; stoichiometric equation of the orange-yellow fluorescent powder is: (Sigma Ln)3-xMexAl5-ySiO12-(x+y)Nx+y, wherein, Ln is equal to Y, Gd, Ce, Lu and Tb; Me is equal to Zr and/or Hf; the stoichiometric index of the powder is that: x is more than or equal to 0.001 but less than or equal to 0.1, and y is more than or equal to 0.001 but less than or equal to 0.1. In addition, the invention also discloses a warm white light-emitting diode using the orange-yellow fluorescent powder.

Luminescent diode and its phosphor and organic thin film layer

The invention relates to a phosphor which is prepared with a matric of yttrium aluminum garnet, an activator of cerium and additives of terbium ion, gallium ion, ytterbium ion and lutetium ion and has a chemical formula of (Y1-x-y-x-p-qGdxTbyYbzLupCeq) 3Al5O12. In addition, the invention provides an organic thin film and a light-emitting diode using the phosphor and the organic thin film.

Red light fluorescent powder and multilayer light conversion film

The invention relates to a red-light phosphor powder which consists of strontium of rare earth element and/or hafnium sulfides and activator. The invention is characterized in that: the adopted materials are fluorine sulfur oxides of lanthanum-yttrium-zirconium and/or hafnium. The total stoichiometric formula is (La1-x-y-zYxAyMez+4O)2S1(F-1)2z. The activator originates from the formula: A=(TR+3= Signa Eu, Sm, Gd, Tb)+(TR+4=Pr+4); in this situation, Me+4=Zr+4 and/or Hf+4. Compared with criterion material, the luminous brightness of the phosphor in the invention is increased by 1.6-2.4 times. In addition, the average diameter of red-light phosphor powder is d50 0.6 Mu m. The invention also discloses a light-conveying film of multilayer light, the three-layer polymerization agricultural filmof which is filled with phosphor powder. The agricultural film takes polyethylene and derivatives of that as matrix and is added with light stabilizer.

Boron fluoride fluorescent powder for light emitting diode and preparation thereof

The invention relates to fluorescent powder using cerium-contained yttrium aluminum garnet as a substrate. Cerium serves as an activator which can convert blue light emitted by a mononitride heterojunction into bright yellow light. The fluorescent powder is characterized in that the chemical formula is Ln3Al+32-x(AlO4)-53-x(BF4)-12x, wherein Ln is equal to Y1-y-zGdyCez, and a boron fluoridecomponent (BF4)-1 is added to the fluorescent powder so as to replace (AlO4)-5 in part of garnet crystal lattices. Furthermore, the invention relates to a light emitting diode, which uses the fluorescent powder to ensure that the luminous flux is more than 300 lumens, wherein the luminous efficiency eta of the fluorescent powder in an independent white light emitting diode is equal to 132 to 96 lumens per watt. Besides, the invention also relates to a method for preparing the fluorescent powder using the cerium-contained yttrium aluminum garnet as the substrate.

Light energy battery and its red light conversion layer

The invention relates to a light energy battery and a red light converting layer thereof. The converting layer is characterized in that the converting layer can absorb ultraviolet rays, violet, blue, cambridge blue and yellow-green parts of the solar spectrum to convert into sub-band radiation of the red light, the dark red light and the near infrared rays. The maximum of absorption spectrum of the converting layer is positioned in a region that lambda is from 470 nm to 490 nm, and the maximum of re-radiation spectrum is positioned in a region that the lambda is from 700 to 900 nm, thereby coinciding with the region of optimum sensitivity of a silicon-based solar cell. In the silicon-based solar cell of the invention, the converting layer is filled with light transmission polymers of ethyl vinyl acetate or poly carbonate type, phosphors which are composed of alpha-Al2O3-Ti2O3 are filled in the polymers, and the radiative quantum efficiency of the polymers reaches 90 percent.

Warm white luminous diode, film and red fluorescent powder thereof

The invention relates to a red fluorescent powder which uses strontium aluminate as a base and europium as an activator. The red fluorescent powder is characterized in that: the chemometric equation of the powder is: (SrO)4(Sigma Me<+2>O)1Al2O3:Eu, wherein, Me<+2> is equal to Mg and/or Ca and/or Ba. The invention also discloses a method for preparing the red fluorescent powder and a warm white light-emitting diode using the fluorescent power. In addition, the invention also discloses a multi-layer polyethylene film using the red fluorescent powder.

Light energy battery and its red light conversion layer

The invention relates to a light energy battery and a red light converting layer thereof. The converting layer is characterized in that the converting layer can absorb ultraviolet rays, violet, blue, cambridge blue and yellow-green parts of the solar spectrum to convert into sub-band radiation of the red light, the dark red light and the near infrared rays. The maximum of absorption spectrum of the converting layer is positioned in a region that lambda is from 470 nm to 490 nm, and the maximum of re-radiation spectrum is positioned in a region that the lambda is from 700 to 900 nm, thereby coinciding with the region of optimum sensitivity of a silicon-based solar cell. In the silicon-based solar cell of the invention, the converting layer is filled with light transmission polymers of ethyl vinyl acetate or poly carbonate type, phosphors which are composed of alpha-Al2O3-Ti2O3 are filled in the polymers, and the radiative quantum efficiency of the polymers reaches 90 percent.

Solar cell luminescent conversion layer and inorganic fluorescent powder

The invention relates to the technical field of energy technology, in particular to a material structure for manufacturing a silicon solar cell. The structure of the silicon solar cell is formed by collected an organosilicon polymer and inorganic oxide fluorescent powder. The compositions of the solar cell come from polysilicon, monocrystal silicon and amorphous silicon, which aim at better improving effective parameters of the solar cell. In the inorganic fluorescent powder containing an oxidation composition, the material structure adopts orthosilicate, aluminate, phosphate-vanadate and oxysulfide. When d50 is less than or equal to 0.8 micron, the weight ratio of synthetic fluorescent powder is between 0.05 and 10 percent; and the organosilicon polymer on the surface has the same thickness layer which is formed through 0.3 to 5 mm thermoplastic loading or thermosetting loading Three modes are comprehensively adopted to promote all electrical parameters of the solar cell by 10 percent ...

Encapsulation structure for LED and method thereof

The invention provides a packing structure of a luminescent diode, which comprises a crystal particle capable of emitting electroluminescence, solder paste layers which are tightly arranged on the bottom and the periphery of the crystal particle and enables the crystal particle to be combined with at least one support, and a heat conducting layer which is tightly arranged on the bottom of the solder paste and can provide the heat conducting approach of the crystal particle. With the structure, the packing heat resistance of the luminescent diode can be greatly reduced, and furthermore, the invention further provides a method for packing the luminescent diode, which can greatly reduce the packing heat resistance of the luminescent diode.

Light emitting diode and fluorescent powder for shortwave semiconductor

The invention relates to fluorescent powder for a shortwave heterojunction light emitting diode. The fluorescent powder can create white-light radiation which originates from heterojunction blue-light radiation and yellow light radiated out after the fluorescent powder absorbs blue light. The composition of the fluorescent powder uses yttrium aluminitum garnet as a substrate and forms the chemical formula of A3B5C12:TR, wherein A is YxGdyLuz; B is Al; C is OmNnFn; TR is Ce; the Y atomic fraction [Y] is equal to x; [Gd] is equal to y, [Lu] is equal to z, [Ce] is equal to w; x+y+z+w is equal to 1; [O] is equal to m; [N]is equal to [F] and is equal to n; and m+2n is equal to 1. The fluorescent powder has high luminous intensity, stable photochromism and high durability.

High heat radiating circuit substrate and manufacturing method thereof

The invention relates to a high heat radiating circuit substrate and a manufacturing method thereof. The high heat radiating circuit substrate comprises a conducting wire layer, an insulating layer and a graphite heat conducting layer, wherein at least one electronic component can be arranged on the conducting wire layer, and wires are arranged on the conducting wire layer for connecting the electronic component; the insulating layer is positioned at one side of the conducting wire layer; and the graphite heat conducting layer is arranged at one side of the insulating layer and can uniformly radiate the heat generated by the electronic component. The manufacturing method of the high heat radiating circuit substrate comprises the following steps: firstly, using a metallic substance or an alloy thereof to manufacture the conducting wire layer; secondly, forming at least one wire on the conducting wire layer; thirdly, using an insulating substance to manufacture the insulating layer; andfourthly ...

Tricolor field emission fluorescent powder and production of display

The invention relates to a field-emission display screen with total chromatic system of a red-blue-green nanometer carbon tube, the system is composed of three separated cathodoelectrolumine fluorescent screens, anode plate and a cathode plate, wherein transparent oxide thin film is adhered on an optical gate electrode of the anode plate, an electron source which is emitted from the optical gate electrode of the cathode plate impacts the cathodoelectrolumine fluorescent screens of the cathode plate with the variation of the gap between the cathode plate and the anode plate, the display screen is characterized in that the cathodoelectrolumine fluorescent screens are made of rare-earth elements capable of being activated, and thereby the stability and the uniformity of the luminosity of the fluorescent screens are guaranteed under the activating of electron beams.

Luminescent diode and phosphor thereof

The invention relates to a phosphor which is prepared with a matrix of yttrium aluminum garnet and an activator of Ce, provided with a composition formula of (Y1-x-y-zGdxCeyBaz)3Al5O12-z/2Fz(x equals to 0.1-0.45, y equals to 0.01-0.08, z equals to 0.0001-0.01). The phosphor radiates greenish yellow light with a peak value changing from 535nm to 585nm in the direct ratio to the concentration ratio of Gd to Y in the matrix of yttrium aluminum garnet. In addition, the invention provides a light-emitting diode whose organic thin film is filled with the phosphor.

Composite material for white-light diode and inorganic fluorescent powder

The invention relates to a composite material, which is used in a white-light diode and inorganic fluorescent powder and at least comprises two inorganic matters (fluorescent powder and light scatterer) and polymerized adhesive. The composite material is used as a luminescent conversion layer and is interacted with the shortwave light radiated from an InGaN heterojunction; moreover, the composite material is characterized in that: the light scatterer is a nano powder material in the form of AB quantum point compound, wherein A is Zn or Cd; B is O, S, Se or Te and is formed into the composite material along with (Y2-x-y-z Gd x Ce y Dy z O3) 1.5 +-alpha(Al2 O3) 2.5+-beta substrate inorganic fluorescent powder, wherein, x is more than 0.01 and is less than or equal to 0.4; y is more than 0.001 and is less than or equal to 0.1; z is more than or equal to 0.00001 and is less than or equal to 0.01; alpha is more than or equal to 0.01 and is less than 0.1; and beta is more than or equal ...

Red light fluorescent powder and multilayer light conversion film

The invention relates to a red-light phosphor powder which consists of strontium of rare earth element and/or hafnium sulfides and activator. The invention is characterized in that: the adopted materials are fluorine sulfur oxides of lanthanum-yttrium-zirconium and/or hafnium. The total stoichiometric formula is (La1-x-y-zYxAyMez+4O)2S1(F-1)2z. The activator originates from the formula: A=(TR+3= Signa Eu, Sm, Gd, Tb)+(TR+4=Pr+4); in this situation, Me+4=Zr+4 and/or Hf+4. Compared with criterion material, the luminous brightness of the phosphor in the invention is increased by 1.6-2.4 times. In addition, the average diameter of red-light phosphor powder is d50 0.6 Mu m. The invention also discloses a light-conveying film of multilayer light, the three-layer polymerization agricultural film of which is filled with phosphor powder. The agricultural film takes polyethylene and derivatives of that as matrix and is added with light stabilizer.

Solar cell and its luminous converting layer

The present invention relates to a solar cell, which makes the monocrystalline silicon piece as a base, includes a electrode system, a polymerization film connecting with the monocrystalline silicon piece, and a glass piece covered on the polymerization film, which is characterized in that: the solar cell further includes a luminous converting layer, further more the luminous converting layer is stuffed with inorganic fluorescent powder, the inorganic fluorescent powder can adsorb radiating in the purple, blue and green optical spectrum region, and shines in yellow, orange yellow and infrared region of the electromagnetic wave spectrum to increas the efficiency of the solar cell. The structural feature of the solar cell of the present invention can assure increasing 1.2 times of the battery efficiency than that of the original.

Catalyst for making ethylene from ethane oxidative dehydrogenation

The present invention provides the catalyst for making ethylene from ethane oxidative dehydrogenation. It contains the oxides of alkaline earth metal specially of Mg, Ca, Sr, and Ba; or and oxides of rare earth metal, specially of La, Ce and Sm, and also fluoride, it may be the fluoride of alkaline earth metal, specially of Ca, Mg, Sr and Ba, also may be the fluoride of rare earth metal, specially of Ce, La and Sm. the content of fluoride is 50-96%, the best option is 80-90%. Said catalyst possesses of the property of ethane oxidative dehydrogenation, specially high selectivity of produced ethylene, the catalyst is stable and capable of reacting under high rate, the reaction condition is relatively moderate.

Warm white LED and its bromide fluorescent powder

The invention relates to bromide luminescent powder, which takes the rare earth oxidative garnet element as the foundation. The bromide luminescent powder is characterized in that bromide ion is added in garnet component, and the chemical equivalent composition formula of the bromide luminescent powder is (Sigma Ln)3Al2[Al(O1-xBr2x)4]3, wherein, Sigma Ln is equal to Gd and/or Y and/or Lu and/or Dy and/or Ce and/or pr, and the stoichiometric amount index X is equal to 0.0001 to 0.05; the cubical lattice parameter value a is equal to 12.1 to 12.6 A, the maximum radiation wavelength Lambada in the orange red emission zone of the optical spectrum is equal to 560 to 610 nm, the color coordinate x is equal to 0.46, and y is equal to 0.532. in addition, the invention also discloses a warm white light emitting diode adopting the bromide luminescent powder.

Fluorescent powder used in blue light diodes

The invention relates to fluorescent powder used in blue light diodes. The fluorescent powder is formed on the basis of iso-type solid solution (Sigma Ln)3Al5O12 and Me 3 Me 2 Si3O12 which are at a ratio of (1-x):x and are formed into the following chemical measuring formula: (Sigma Ln)3-x Me3x Me2x Al5-x Si3xO12, wherein Ln is equal to Y and/or Gd and/or Lu and/or Ce and/or Yband/or Pr and/or Sm; Me is equal to Mg and/or Ca and/or Sr and/or Ba; Me is equal to In and/or Ga and/or Sc; and x is more than or equal to 0.0001 and less than or equal to 0.2. The compositions of the fluorescent powder have a color coordinate value x which is more than or equal to 0.42 and a color coordinate total number Sigma (x+y) which is more than or equal to 0.92. The radiation ofthe fluorescent powder occurs within a range that Lambada ranges between 500 and 750nm and a spectrum maximum value changes within a range that Lambada ranges between 520 and 585nm. Light-emitting diodes ...

Warm-white semiconductor and yellow-orange luminescent silicate fluorescent powder thereof

The invention proposes a novel silicates fluorescent powder comprising Mg2Me+20.5Ln3Si2.5O12-2yN-3yF-1y, wherein Me+2=Mg, Ca, Sr or Ba, Ln=Sc, Lu, Er or Ho, such components are activated by ions from d, f elements, particularly Ak+n=Cu+1, Ce+3, Eu+2, Ag+1 or Mn+2. Ions are single ions from them or ion pair. Fluorescent powder proposed by the invention is characterized by its cubic garnet structure, radiates in green, green-yellow or yellow-orange spectral regions, and synthesizes by solid phase synthesis. The material proposed by the invention forms mixture with (Y, Gd, Ce)3Al5O12 substrate fluorescent powder, makes sure white radiation is generated, has a color temperature T<5000K, high luminous intensity and high luminous efficiency. Moreover, the invention also provides a warm white luminous semi-conductor using such silicates fluorescent powder.

Boron fluoride fluorescent powder for light emitting diode and preparation thereof

The invention relates to fluorescent powder using cerium-contained yttrium aluminum garnet as a substrate. Cerium serves as an activator which can convert blue light emitted by a mononitride heterojunction into bright yellow light. The fluorescent powder is characterized in that the chemical formula is Ln3Al2-x(AlO4)3-x(BF4)2x, wherein Ln is equal to Y1-y-zGdyCez, and a boron fluoride component (BF4) is added to the fluorescent powder so as to replace (AlO4) in part of garnet crystal lattices. Furthermore, the invention relates to a light emitting diode, which uses the fluorescent powder to ensure that the luminous flux is more than 300 lumens, wherein the luminous efficiency eta of the fluorescent powder in an independent white light emitting diode is equal to 132 to 96 lumens per watt. Besides, the invention also relates to a method for preparing the fluorescent powder using the cerium-contained yttrium aluminum garnet as the substrate.

Set top box with shielding and anti-interference functions

The utility model discloses a set top box with shielding and anti-interference functions, relates to the technical field of set top boxes, and aims to solve the problem that the existing set top box is poor in shielding and anti-interference effects. A PCBA main board and a hard disk are arranged in the set top box, a CPU, a DDR, a FLASH chip, a WiFi module and a tuner circuit are arranged at the upper end of the PCBA main board, first shielding covers are arranged outside the CPU, the DDR, the FLASH chip and the WiFi module, a second shielding cover is arranged outside the tuner circuit, a first cooling fin is arranged above the PCBA main board, a second cooling fin is arranged above the second cooling fin, and the second cooling fin is arranged above the second cooling fin. A first radiating fin is arranged below the PCBA main board, a second radiating fin is arranged below the PCBA main board, the first shielding case and the second shielding case are both in welded connection with the ...

WLED and its inorganic fluorescent powder

The present invention relates to white glowing diode of an ultraviolet ray radiating alloplasm, which is made in the basis of semiconductor indium gallium azide. The biggest radiation spectrum of the alloplasm is a new ultraviolet ray from 395nm to 405nm. The characters are: a glowing transform layer of even density forms in the alloplasm radiation surface, and the glowing transform layer is filled with at least one single component azide broad band fluorescent powder, and the fluorescent powder fully absorbs the first degree radiation of the alloplasm and radiates white light or even glows. Moreover, the present invention also reveals an inorganic fluorescent powder, which has high heat stability, very nice colority and high effectiveness.

Warm-white light-emitting diode and fluorescent powder having orange radiation thereof

The invention relates to a fluorescent powder with orange radiation, which is applied in a warm white light-emitting diode. The fluorescent powder utilizes rare-earth garnet to be substrate and utilizes cerium to be activator, which is characterized in that the fluorescent powder has constant radiation maximum value under the excitation of short-wave light which originates from nitridation arsenic gallium, the total stoichiometric formula is (sigma Ln)3Al5O12, wherein sigma Ln=Y=Gd=Lu=Yb=Eu, Ce, Pr, Sm, Dy or Er can be utilized as activation element. The composition of the fluorescent powder of the invention guarantees constant maximum value of radiation spectrum, and guarantees higher radiation light intensity in utilizing an InGaN light-emitting diode, and light-transporting efficiency is 50-801m/w. In addition, the invention also discloses a warm white light-emitting diode.

Fluorescent powder with gadolinium-lutetium-cerium as substrate and warm white light emitting diode using the same

The invention relates to fluorescent powder using cerium, gadolinium and lutetium as a substrate, which is characterized in that F<-1> ions and N<-3> ions are added to the fluorescent powder to replace oxygen ions in part of garnet crystal lattices and the chemical formula of the fluorescent powder is (Gd1-x-yLuxCey)3Al5O12-zFz/2Nz/2, and the fluorescent powder can be radiated in the range of a salmon pink spectrum region after the shortwave excitation of indium gallium mononitride (InGaN) semiconductor heterojunction. Furthermore, the invention also discloses a warm white light emitting diode which adopts the fluorescent powder using the cerium, the gadolinium and the lutetium as the substrate, wherein when the semiconductor heterojunction radiation of which the wavelength lambda is equal to between 420 and 500 nanometers is excited, the maximum spectrum lambda of the fluorescent powder is more than 575 nanometers in the salmon pink light luminescence, the semi-wave width is more than ...

Water soluble catalyst loaded on high carbon aldehyde by hydrogen formylating high carbon number terminal olefine

Reinforced light conversion film of optical energy battery

The invention relates to a synergic photoconversion film of a photoenergy cell, which allows the efficiency of photoenergy cells reaching 14 percent to 16 percent by means of moving a luminescent spectrum between the peak wavelength of the solar radiation (Lambada equals to 470 nm) and the wavelength at the maximum light sensitivity of monocrystalline silicon ((Lambada equals to 860 nm to 880 nm). The invention provides a synergic photoconversion film which can convert the solar shortwave and the radiation of visible light band to yellow and orange. This synergic photoconversion film is on the basis of phosphor powder based on matrix of II and III main groups element oxides provided with garnet crystal structure, using elements of which transition occurs between electronic d layer and f layer as activator, the matrix of the phosphor powder is composed of solid solution of homogeneous aluminate of barium and yttrium, the chemical formula of the phosphor powder is Ba Alpha (Y, Gd) 3 Beta ...

Three frequency bands fluorescent powder used for multilayer agricultural film

The invention relates to a tri-band fluorescent powder used for multi-layer agricultural film, wherein the tri-band blue-green-red fluorescent powder converts the near ultraviolet rays of photosynthetic active radiation. The matrix of the tri-band fluorescent powder is orthosilicate of the group II A elements, the general chemical stoichiometric equation is (SigmaMe<+2>O) 2alpha (SiO2)alpha, wherein alpha=1, 2, or 3, SigmaMe<+2> is Ba< +2 >, Sr< +2 >, Ca< +2 > and Mg< +2 >, the structure of the fluorescent powder is a cubic crystal structure, the catalyst is Eu< +2 >, Sm< +2 >, and Mn<+2>, and the area of the maximal value of the tri-band radiation is that lambda1=440-460nm,lambda2=515-535nm, lambda3=626-640nm. The maximal value of each spectral intensity and the maximal value of the semi-wave depend on the concentration of the catalyst and the synthetic technology of the fluorescent powder. The tri-band fluorescent powder is prepared through solid-phase synthesis, and exists in a form ...

White light luminous diode and iodide garnet phosphor powder thereof

Orange luminous fluorescent powder and warm white LED used thereof

The invention relates to orange yellow luminous fluorescent powder. Rare-earth garnet activated through cerium is taken as matrix, the invention is characterized in that atom Li, atom Si, atom N, and atom F are added in fluorescent powder matrix components, to form the chemical meterage general formula of a compound: (Sigma Ln) 3Al5-x-yLiy/3Mgx/2Si(x/2+2y/3)Fq/2O12-qNq/2, when the excitation wave length is from 440 to 475 nm, the wave length of a subband is 542 to 590 nm, the output of a radiation quantum q is larger than 0.9 and the radiation quantum is provided with a stereo group garnet cubic crystalline structure, wherein x is larger than or equal to 0.001 and smaller than or equal to 0.005; y is larger than 0.0001 and smaller than 0.0005 and q is larger than or equal to 0.0001 and smaller than or equal to 0.001, wherein Sigma Ln is equal to Y, Gd, Lu or Ce, the fluorescent powder of the invention has a color coordinate Sigma(x plus y), Sigma(x+y) is larger than 0.89, and the very high ...

Warm white LED and halogenide fluorescent powder thereof

The invention relates to halide fluorescent powder, which is low color temperature halide nitride fluorescent powder on the basis of rare earth oxide garnet and adopts cerium as an activator. The halide fluorescent powder is characterized in that chlorine ions Cl-1 and nitrogen ions N-3 are added into compositions of the fluorescent powder; and the chemical formula formed is (SigmaLn+3)3Al2[(Al(O1-2pClpNp)4]3, wherein SigmaLn is equal to Y and/or Gd and/or Tb and/or Lu and/or Dy and/or Pr and/or Ce. Moreover, the invention also discloses a warm white light-emitting diode which uses the nitride fluorescent powder, and the weight ratio of the warm white light-emitting diode is between 8 and 75 percent. When the power of the light-emitting diode is 1 watt, the warm red luminescent color temperature T is less than or equal to 3,000 kelvins.