Abstract: The invention discloses a red phosphor powder which is based on strontium (Sr) aluminate and using europium (Eu) as exciting agent, and is characterized by that its chemical equivalence formula is (SrO)4(?Me+2O)1Al2O3: Eu, wherein Me+2=Mg and/or Ca and/or Ba. The present invention also discloses a manufacturing process for the red phosphor powder and a warm white light-emitting diode employing the phosphor powder. Moreover, the present invention also discloses a multi-layer polyethylene thin film using the red phosphor powder.

Abstract: The invention relates to a halide phosphor powder for warm-white light emitting diode, which is a kind of low-color-temperature phosphor powder of halide nitride based on garnet of rare earth oxides, uses cerium as activating agent and is characterized in that chloride (Cl?1) and nitrogen ion (N?3) are added to the composition of the phosphor powder and its stoichiometric relationship of the composition is (?Ln+3)3Al2[(Al(O1-2pClpNp)4]3, wherein ?Ln is ?Ln=Y and/or Gd and/or Tb and/or Lu and/or Dy and/or Pr and/or Ce. In addition, the invention also discloses a use of a warm-white light emitting diode of the said phosphor powder with a weight ratio of 8 to 75%. The light emitting diode has a warm-red color temperature T?3000 K when it has a power of 1 watt.

Abstract: A composite light converter for polycrystalline silicon solar cell and silicon solar cell using the converter includes a composite light converter disposed on the surface of a polycrystalline solar cell and connected by the electrode ribbon; upper and lower ethylene-vinyl acetate (EVA) sheets disposed such that the solar cell and the composite light converter are disposed between the EVA sheets; a low iron tempered glass disposed on the upper EVA sheet to transmit light; and a back sheet disposed under the lower EVA sheet and formed of a fluorine film or a PET film. Here, the composite light converter is a polymer binder containing light-emitting components, in which a polymer layer is formed on the surface of a polycrystalline silicon wafer comprising an electrode; the polymer layer is formed of two types of nano inorganic components that are active filling materials inside the converter.

Abstract: The present invention discloses an orange phosphor powder having a rare-earth aluminate have garnet structure, which is characterized by that its chemical composition is added with compounds of the IV and V groups elements and the stoichiometry formula of the orange phosphor powder is (?Ln)3-xMeIVxAl5-ySiyO12-(x+y)N(x+y). Furthermore, the present invention also discloses a warm-white Light-emitting diode employing the orange phosphor powder.

Abstract: The present invention discloses a solar cell which can enhance the absorption of the short-wavelength range radiation ?<400 nm of the sun and re-radiate in the wavelength range ?=500˜780 nm to enhance the solar cell's capability in absorbing more long-wavelength radiation and form separate electron-hole pairs so as to increase the output power of the solar cell assembly. Furthermore, the present invention also provides a transparent light conversion film for solar cells.

Abstract: A high-brightness yellow-orange yellow phosphor for use in warm white LED (light emitting diode), the high-brightness yellow-orange yellow phosphor comprises a substrate based on a rare-earth garnet and cerium for activating said substrate. The high-brightness yellow-orange yellow phosphor has the substances of Li+1, Mg+2 and N?3 contained therein so that the overall stoichiometric equation of the substrate is: ?(Ln)3Al5?xLi(x+y)Mg(x+y)O12?3yN3y and, the high-brightness yellow-orange yellow phosphor radiates in a visible orange yellow band at ?=538˜569 nm when activated by a shortwave light from an InGaN semiconductor heterostructure.

Abstract: The present invention discloses a warm-white-light emitting diode has the substrate of indium gallium nitride (InGaN) heterojunction containing a large amount of quantum wells and having a light conversion polymer layer, characterized by that the light conversion polymer layer is uniform in concentration, the light-emitting surface and edges of the indium gallium nitride heterojunction are covered with a thermosetting polymer, and the light conversion polymer layer contains some fluorescent powders, which are formed as at least two particle layers in the light conversion polymer layer to ensure the light transmitted reaching 20% of the first-order blue light and 70˜80% of the second-order orange-yellow light from the indium gallium nitride heterojunction. The present invention also discloses a fluorescent powder.

Abstract: A blue-green-red three-band phosphor for multilayer agricultural plastic film for converting near ultraviolet light in photosynthetic active radiation is disclosed. The substrate of the phosphor is prepared from the group IIA element SiO44?, having a total stoichiometric equation (?Me+2O)2?(SiO2)?, in which ?=1, 2, 3, ?Me+2=Ba+2 and/or Sr+2 and/or Ca+2 and/or Mg+2, having an orthorhombic crystal architecture, and generating a three-band spectrum when activated by d-f element selected from the group of Eu+2, Mn+2 and Sm+2. The maximum wavelength of the three-band spectrum is ?1=440˜460 nm, ?2=515˜535 nm and ?3=626˜640 nm. The maximum value and halfwave width of every spectrum are determined subject to the concentration of the activator and the phosphor synthesis technology. The three-band phosphor is prepared through a solid synthesis method in the form of high dispersed ultrafine powder having the average grain size of d?0.8 ?m.

Abstract: The present invention discloses a white light-emitting diode based on In—Ga—N nitride heterojunction is characterized by that the light-emitting diode has primary blue light emission of a specific wavelength and a light conversion layer so as to generate white light. Further, the present invention also discloses a light conversion layer and its fluorine oxygen garnet phosphor powder.

Abstract: An inorganic powder uses a UV solid light source applied for the UV LEDs, in which an inorganic powder is based on the inorganic powder of n-silicate group II elements, and its ingredients have valence 2 ions, such as Eu+2, Sm+2, Yb+2 and Dy+2, valence 3 ions Ce+3, Tb+3 and/or Eu+3. The chemical formula of the components is Me+21-xLn+32-ySi2O8:TR+2x:TR+3y, and x=0.0-0.2, y=0.0-0.1. A main structure thereof is a hexagonal crystal structure. When the indium gallium nitride and gallium nitride based allomorphous semiconductor short wave UV light is used under conditions of excitement, the multiple band white light can be obtained.

Abstract: A phosphor providing orange-yellow radiation is prepared from a cerium activated rare-earth garnet substrate that contains Li (lithium), Si (silicon), N (nitrogen) and F (fluorine) atoms, obtaining the overall stoichiometric equation of (?Ln)3Al5-x-yLiy/3Mgx/2Si(x/2+2y/3)Fq/2O12-qNq/2. When the activating wavelength is 440˜475 nm, the orange sub-energy band becomes 542˜590 nm, and the radiation quatum ouput q>0.9, showing a cubic crystal garnet structure. The phosphor has color coordinate ?(x+y)?0.89, and color purity ??0.89. The invention also provides a warm white LED that has light intensity J?300 cd, half open angle 2??60°, luminous efficiency 65???100 lm/W, and color temperature within 2800?T?5500K.

Abstract: The present invention relates to a red light phosphor, which is based on sulfide and activating agent containing rare earth strontium or hafnium. It is characterized by that the aforementioned materials are a fluorine-sulfur oxide containing lanthanum-yttrium-zirconium and/or hafnium with its stoichiometric formula as (La1-x-y-zYxAyMez+4O)2S1(F?1)2z, and activating agent based on A=(TR+3=? Eu, Sm, Gd, Tb)+(TR+4?Pr+4), in which Me+4=Zr+4 and/or Hf+4. Compared with standard materials, the luminous intensity of the phosphor according to the present invention is increased to 1.6-2.4 times. Further, the red light phosphor according to the present invention has a mean diameter of d50?0.6 ?m. The present invention also discloses a multilayer photo-transforming film, in which the three-layer agro-film is filled with phosphor. The agro-film is based on polythene and its derivatives and added with photostabilizer.

Abstract: A fluorescent powder using YAG (yttrium aluminum garnet) as the substrate and cerium as the excitant, and having added thereto Tb (terbium) ions, Ga (gallium) ions, Yb (ytterbium) ions and Lu (lutetium) ions. The YAG (yttrium aluminum garnet) has the chemical formula of (Y1-x-y-z-p-qGdxTbyYbzLupCeq)3Al5O12. The invention also provides an organic film layer using the fluorescent powder, and a LED using the organic film layer.

Abstract: A silicon-based photovoltaic cell is disclosed having a red light conversion layer that absorbs ultraviolet rays, blue-purple or yellow-green light of the Sun's solar radiation and converts the absorption into a red, dark red and near infrared subband radiation. The maximum value of the solar radiation absorbed by the red light conversion layer is ?=470˜490 nm, and the maximum value of the photoluminescent spectrum of the red light conversion layer is within the photosensitive spectral zone of said single-crystal silicon substrate ?=700˜900 nm, i.e., in conformity with the optimal sensitivity area of silicon-based solar cells. The red light conversion layer has filled therein an ethyl acetoacetate or polycarbonate-based light-transmissive polymer that has evenly distributed therein a phosphor composed of ?-Al2O3—Ti2O3, having a quantum efficiency of 90%.

Abstract: A silicate phosphor prepared from Mg2Me+20.5Ln3Si2.5O12-2yN?3yF?1y, in which Me+2=Ca, Sr, Ba, Ln=Sc, Lu, Er, Ho, excited by one single ion or an ion pair of d, f-elements such as Ak+n=Cu+1, Ce+3, Eu+2, Ag+1, Mn+2. The phosphor has a cubic garnet architecture prepared by solid phase synthesis, and radiates at green, green-yellow, yellow-orange spectrum regions. When mixed with (Y,Gd,Ce)3Al5O12 substrate-based phosphor, the compound mixture has warm white radiation and color temperature T<4000K with high luminous intensity and high luminescence efficiency. The invention also provides a warm white semiconductor using the silicate phosphor.

Abstract: A type of inorganic light-emitting material for a UV solid light source is described. The inorganic light-emitting material is fluorescent powder for a silicate-based UV solid light source. The main ingredient is Sr2CaLn2(SiO4)3±?. The center of the light-emitting part is the material entering the cation light lattice node. The material is Eu+2, Sm+2, Yb+2, Mn+2, Sn+2, and Cu+2 series +2 valence ions. The second part of the light-emitting is the +3 valence TR+3 ions of Ce+3, Eu+3, Tb+3, Sm+3, and Dy+3 series distributed inside the nodes. When the chemical index is 0???0.2, the indium nitride and gallium nitride-based allomorphous semiconductor short wave UV light, under conditions of excitement, produces light radiation wavelength ??430 nm multiple band white light that can then be used. The color temperature is between T=2500K and 12000K.

Abstract: The invention relates to a halide phosphor powder for warm-white light emitting diode, which is a kind of low-color-temperature phosphor powder of halide nitride based on garnet of rare earth oxides, uses cerium as activating agent and is characterized in that chloride (Cl?1) and nitrogen ion (N?3) are added to the composition of the phosphor powder and its stoichiometric relationship of the composition is (?Ln+3)3Al2[(Al(O1-2pClpNp)4]3, wherein ?Ln is ?Ln=Y and/or Gd and/or Tb and/or Lu and/or Dy and/or Pr and/or Ce. In addition, the invention also discloses a use of a warm-white light emitting diode of the said phosphor powder with a weight ratio of 8 to 75%. The light emitting diode has a warm-red color temperature T?3000 K when it has a power of 1 watt.

Abstract: A trichromatic field-emission display is disclosed to include a cathode plate, three cathode electroluminescent phosphor screens and an anode plate, the anode plate having a transparent oxide thin film bonded to the photo gate electrode thereof, electron sources emitted by the photo gate electrode of the cathode plate striking the cathode electroluminescent phosphor screens to cause change of the electric field in the gap between the cathode plate and the anode plate. The cathode electroluminescent phosphor screens are made of an excitable rare earth element, assuring high stability and uniformity of luminous brightness when excited by an electron beam.

Abstract: The present invention discloses a fluorine-oxide phosphor powder, based on the cubic garnet fluorine oxide and yttrium aluminum oxide and using cerium as activator, is characterized in that the luminescent material is added with fluorine with a chemical equivalence formula as Y3-xCexAl2(AlO4-?FO)?Fi)?)3, wherein FO is fluorine ion in the lattice point of oxygen crystal and Fi is fluorine ion between the lattice points. The phosphor powder has cerium ions Ce+3 as activator and can be excited by quantum radiation or high-energy particles with energy between E?2.8 eV and E?1 MeV to have a peak wavelength between ?=538˜548 nm and half bandwidth of ??0.5=109-114 nm. Moreover, the present invention also discloses an In—Ga—N heterojunction used in spectrum converter, semiconductor light source, scintillating phosphor powder, scintillation sensor, and FED (Field Emission Display) monitor.

Abstract: A phosphor providing orange-yellow radiation is prepared from a cerium activated rear-earth garnet substrate that contains Li (lithium), Si (silicon), N (nitrogen) and F (fluorine) atoms, obtaining the overall stoichiometric equation of (?Ln)3Al5-x-yLiy/3Mgx/2Si(x/2+2y/3)Fq/2O12-qNq/2. When the activating wavelength is 440˜475 nm, the orange sub-energy band becomes 542˜590 nm, and the radiation quantum output q>0.9, showing a cubic crystal garnet structure. The phosphor has color coordinate ?(x+y)?0.89, and color purity ??0.89. The invention also provides a warm white LED that has light intensity J?300 cd, half open angle 2??60°, luminous efficiency 65 ???100 lm/W, and color temperature within 2800?T?5500K.