EP3204464A1 - Phosphors - Google Patents
PhosphorsInfo
- Publication number
- EP3204464A1 EP3204464A1 EP15774506.8A EP15774506A EP3204464A1 EP 3204464 A1 EP3204464 A1 EP 3204464A1 EP 15774506 A EP15774506 A EP 15774506A EP 3204464 A1 EP3204464 A1 EP 3204464A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- bno
- compound
- compound according
- doped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 150000001875 compounds Chemical class 0.000 claims abstract description 75
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 20
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 16
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 16
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims abstract description 12
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052582 BN Inorganic materials 0.000 claims abstract description 9
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims abstract 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 17
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 11
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 11
- 239000002019 doping agent Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 9
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 9
- 230000001590 oxidative effect Effects 0.000 claims description 9
- 229910052712 strontium Inorganic materials 0.000 claims description 9
- 229910052788 barium Inorganic materials 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 8
- 150000002602 lanthanoids Chemical class 0.000 claims description 8
- 150000004767 nitrides Chemical class 0.000 claims description 8
- 229910052727 yttrium Inorganic materials 0.000 claims description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052765 Lutetium Inorganic materials 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 5
- 150000001340 alkali metals Chemical class 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 229910052794 bromium Inorganic materials 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 241000251730 Chondrichthyes Species 0.000 claims description 3
- 229910052740 iodine Inorganic materials 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 229910052706 scandium Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 29
- 239000000463 material Substances 0.000 description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000000843 powder Substances 0.000 description 9
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 229910017639 MgSi Inorganic materials 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910004283 SiO 4 Inorganic materials 0.000 description 7
- 238000000295 emission spectrum Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 230000001603 reducing effect Effects 0.000 description 7
- 239000007858 starting material Substances 0.000 description 7
- 229910004261 CaF 2 Inorganic materials 0.000 description 6
- 229910004762 CaSiO Inorganic materials 0.000 description 6
- 101100476480 Mus musculus S100a8 gene Proteins 0.000 description 6
- 238000000695 excitation spectrum Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000000985 reflectance spectrum Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 230000003595 spectral effect Effects 0.000 description 6
- PSBUJOCDKOWAGJ-UHFFFAOYSA-N azanylidyneeuropium Chemical compound [Eu]#N PSBUJOCDKOWAGJ-UHFFFAOYSA-N 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 229910052950 sphalerite Inorganic materials 0.000 description 4
- 229910052984 zinc sulfide Inorganic materials 0.000 description 4
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 3
- 229910003668 SrAl Inorganic materials 0.000 description 3
- 229910052771 Terbium Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- BCZWPKDRLPGFFZ-UHFFFAOYSA-N azanylidynecerium Chemical compound [Ce]#N BCZWPKDRLPGFFZ-UHFFFAOYSA-N 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- -1 Al 2 O 3 Chemical class 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 229910002601 GaN Inorganic materials 0.000 description 2
- 229910002420 LaOCl Inorganic materials 0.000 description 2
- 229910010199 LiAl Inorganic materials 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910016066 BaSi Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 101150027751 Casr gene Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910017414 LaAl Inorganic materials 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910020068 MgAl Inorganic materials 0.000 description 1
- 229910017857 MgGa Inorganic materials 0.000 description 1
- 229910017625 MgSiO Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 description 1
- 229910005091 Si3N Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910007709 ZnTe Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001785 cerium compounds Chemical class 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002178 europium compounds Chemical class 0.000 description 1
- 229910001940 europium oxide Inorganic materials 0.000 description 1
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052605 nesosilicate Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000004762 orthosilicates Chemical class 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
- C09K11/07—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials having chemically interreactive components, e.g. reactive chemiluminescent compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/0877—Borates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/7732—Halogenides
- C09K11/7733—Halogenides with alkali or alkaline earth metals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7759—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing samarium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Definitions
- the present invention relates to europium, cerium, samarium or praseodymium-doped boronitrides, a production process for these compounds fertil fertilize, and the use of the compounds of the invention as conversion phosphors.
- Another object of the present invention relates to a light-emitting device containing a doped boron nitride according to the invention.
- Inorganic fluorescent powders excitable in the blue and / or UV spectral range are of great importance as conversion phosphors for phosphor converted LEDs, in short pc-LEDs.
- Many conversion phosphor systems are known in the meantime, such as alkaline earth orthosilicates, thiogallates, garnets, nitrides and oxynitrides, which are each doped with Ce 3+ or Eu 2+ .
- the latter nitride and oxynitride phosphors are currently the subject of intensive research because these materials have red emission with emission wavelengths above 600 nm and are therefore of importance for the production of warm white pc LEDs with color temperatures ⁇ 4000 K.
- a disadvantage of using the phosphors for phosphor-converted LEDs mentioned above is the aging at the interface phosphor / polymer, so that it comes to darkening of the converter layer and thus to a decrease in brightness. This is particularly critical for achieving very long lifetimes, since the encapsulation of the powder or ceramic converters is done by epoxy or silicone resin.
- both polymers are not diffusion-tight for small molecules like H2O, CO2 or NH3. In the course of the operating life of the LED luminaires, they reach the converter and can trigger (photo) chemical reactions at the interfaces. It is therefore of particular interest to find materials that have a particularly high long-term stability, as z. B. Si3N, SiC or BN is the case. However, such materials are often particularly difficult to manufacture.
- Another of the present invention is to provide further phosphors, in particular orange to red-emitting phosphors, in order to provide the person skilled in the art with a larger selection of suitable phosphors for use in phosphor-converted LEDs. It was therefore the object of the present invention to provide such phosphors.
- 303-304 describes the crystal structure of EuBa8 (BN2) 6, which can be formally stoichiometrically described as Euo.5Ba4 (BN2) 3. Luminescence properties of this compound are not described, nor is the use of this compound in a phosphor converted LED. This compound is described as a black, air and water sensitive compound so it is not suitable for use as a phosphor.
- the invention relates to a europium, cerium, samarium and / or praseodymium-doped compound, wherein the dopant is present in an amount of up to 10 mol%, according to the following formula (1),
- A are one or more elements selected from the group
- EA is one or more elements selected from the group consisting of Mg, Ca, Sr and Ba;
- Ln are one or more elements selected from the group
- B, N and O in formula (1) stand for boron, nitrogen and oxygen according to the common chemical nomenclature.
- the compounds according to the invention are boronitrides which contain boron and have stoichiometrically at least twice the number of nitrogen atoms.
- the units containing boron and nitrogen are (BN2) 3 " units, which may also be present as dimer (B2N4) 6" or as trimer (B3N6) 9 " , or (BN3) 6" -Units.
- the Eu exists as Eu 2+ or Eu 3+ , where Eu 2+ is either two alkali metals A or an alkaline earth metal EA replace, preferably an alkaline earth metal EA, or Eu 3+ replaces a lanthanide metal Ln.
- Ce is present as Ce 3+ and replaces an alkaline earth metal EA or preferably a lanthanide metal Ln.
- Sm When the compound is doped with Sm, Sm is present as Sm 2+ or Sm 3+ , with Sm 2+ replacing either two alkali metals A or an alkaline earth metal EA, preferably an alkaline earth metal EA, or Sm 3+ replacing a lanthanide metal Ln.
- the Pr is present as Pr 3+ and replaces an alkaline earth metal EA or preferably a lanthanide metal Ln.
- the amount of up to 10 mol% means that the dopant is present in an amount of up to 10 mol% relative to the element on whose lattice sites the dopant is incorporated and which it replaces in the compound.
- the amount of Eu 2+ ions is maximum based on the total amount of alkaline earth ions and Eu 2+ ions 10%.
- the compound according to the invention contains exactly one dopant (activator), ie it is doped either with Eu or with Ce or with Sm or with Pr, the proportion of the dopant being up to 10 mol%.
- the proportion is preferably 0.1 to 5 mol%, particularly preferably 0.5 to 2 mol%, very particularly preferably 0.8 to 1, 2 mol%.
- the compound according to the invention therefore particularly preferably contains cations of not more than two of the three groups A, EA and Ln.
- the connection according to the invention particularly preferably contains cation from the group EA and / or Ln.
- a 0 is particularly preferred.
- the indices a, b, c, e, f, g, h and i are each integers, a deviation of which is possible for a, b or c, if in each case the corresponding cation by the doping with Eu or Ce or Sm or Pr has been replaced.
- boron-containing unit of the compound according to the invention is BN 2
- e is preferably 1, 2, 3 or 4, particularly preferably 2 or 3.
- Hai F.
- i 0, and the compound of the invention does not contain halide Hai.
- Preferred embodiments of the compounds according to the invention in which the boron-containing unit is BN 2 are the europium, cerium, samarium or praseodymium-doped compounds according to the following formula (2), wherein the dopant is present in an amount of up to 10 mol% is present,
- Preferred embodiments of the above-mentioned compound of formula (2) are the compounds (2-Eu) and (2-Ce) and (2-Sm-a) and (2-Sm-b) and (2-Pr )
- Preferred embodiments of the compounds of the formula (2) are the europium, cerium, samarium or praseodymium-doped compounds of the following formulas (2A) to (2R),
- A is preferably the same or different selected from Li and Na, more preferably Li.
- EA is preferably the same or different selected from Ca, Sr and Ba, more preferably Sr and Ba.
- the compound of formula (2A) is preferably Sro, sBa4 (BN2) 3 with Eu, Ce, Sm or Pr doping.
- Ln is preferably the same or different selected from Y, Lu or Gd.
- Hai is preferably the same or different selected from F or Cl, more preferably F.
- the compounds according to the invention can be present as a pure phase or as a mixed phase with other phases.
- An extraneous phase, which can occur in the synthesis and which does not adversely affect the properties of the compounds according to the invention are alkaline earth oxides.
- the compounds according to the invention can be prepared by mixing suitable starting materials and calcining, in particular under non-oxidizing conditions, preferably under reducing conditions.
- a further subject of the present invention is therefore a process for the preparation of a compound according to the invention, characterized by the following process steps:
- boron nitride BN also have boron nitride BN and a europium, cerium, samarium and / or praseodymium source;
- any conceivable europium compound can be used with which a europium-doped boron nitride can be prepared.
- Europium oxide especially EU2O3
- EuN europium nitride
- EuN europium nitride
- cerium source in step (a) any conceivable cerium compound can be used with which a cerium-doped boron nitride can be prepared.
- Cerium oxide (especially CeO 2) and / or cerium nitride (CeN), in particular CeN, are preferably used as the cerium source.
- Suitable starting materials for the elements A, EA, Ln, Sm and / or Pr are the corresponding nitrides, hydrides or even the free metals. If the compounds according to the invention contain shark, the corresponding halides can also be used. For the production of the oxy boronitrides can also be used the oxides, borates and carbonates.
- the compounds are preferably used in a ratio to one another such that the atomic number of the elements A, EA and / or Ln, the
- step (a) The starting compounds in step (a) are preferably used in powder form and processed together, for example by a mortar, to form a homogeneous mixture. Since the nitrides used are sensitive to moisture, the preparation of the mixtures is preferably carried out in an inert atmosphere, for example under protective gas in a glove box.
- Non-oxidizing conditions are understood as meaning any conceivable non-oxidizing atmospheres, in particular substantially oxygen-free atmospheres, ie an atmosphere whose maximum oxygen content is ⁇ 100 ppm, in particular ⁇ 10 ppm, vacuum not being suitable as non-oxidizing atmosphere in the present case ,
- a non-oxidizing atmosphere can be generated, for example, by the use of inert gas, in particular nitrogen or argon.
- a preferred non-oxidizing atmosphere is a reducing atmosphere.
- the reducing atmosphere is defined as containing at least one reducing gas. Which gases have a reducing effect is known to the person skilled in the art.
- suitable reducing gases are hydrogen, carbon monoxide, ammonia or ethylene, more preferably hydrogen, which gases may also be mixed with other non-oxidizing gases.
- the reducing atmosphere is particularly preferably prepared by a mixture of nitrogen and hydrogen, preferably in the ratio Hb: N 2 of 1:99 to 20:80, preferably 3:97 to 10:90, in each case based on the volume.
- the calcination is preferably carried out at a temperature in the range of 900 ° C to 2000 ° C, more preferably 1000 ° C to 1700 ° C, most preferably from 1000 ° C to 1400 ° C.
- the period of calcination is preferably 1 to 14 hours, particularly preferably 2 to 12 hours and especially 5 to 10 hours.
- the calcination is preferably carried out so that the resulting mixtures are introduced, for example, in a vessel made of boron nitride in a high-temperature furnace.
- the high-temperature furnace for example, a tube furnace containing a support plate made of molybdenum foil.
- the resulting phosphors are usually deagglomerated and sieved.
- the compounds according to the invention can be coated. Suitable for this purpose are all coating methods, as known to the person skilled in the art according to the prior art and used for phosphors. Suitable materials for the coating are, in particular, metal oxides and nitrides, in particular earth metal oxides, such as Al 2 O 3, and earth metal nitrides, such as AlN, and also SiO 2.
- the coating can be carried out, for example, by fluidized bed processes. Further suitable coating methods are known from JP 04-304290, WO 91/10715, WO 99/27033, US 2007/0298250, WO 2009/065480 and WO 2010/075908. It is also possible, alternatively to the above-mentioned inorganic coating and / or additionally to apply an organic coating.
- the coating may have an advantageous effect on the stability of the compounds and the dispersibility.
- Another object of the present invention is the use of the compound of the invention as a phosphor, in particular as a conversion phosphor.
- the term “conversion luminescent material” is understood as meaning a material which is present in a certain wavelength. Length range of the electromagnetic spectrum, preferably in the blue or UV spectral range, absorbs radiation and emitted in another wavelength range of the electromagnetic spectrum, preferably in the red or orange spectral range, in particular in the red spectral range, visible light.
- the term “radiation-induced emission efficiency” is to be understood, ie the conversion phosphor absorbs radiation in a certain wavelength range and emits radiation in another wavelength range with a certain efficiency.
- emission wavelength shift is understood to mean that one conversion phosphor emits light at a different wavelength, that is, shifted to a smaller or larger wavelength compared to another or similar conversion phosphor. So the emission maximum is shifted.
- Another object of the present invention is an emission-converting material comprising a compound of the invention according to one of the formulas listed above.
- the emission-converting material may consist of the compound according to the invention and in this case would be equivalent to the term "conversion phosphor" as defined above.
- the emission-converting material according to the invention contains, in addition to the compound according to the invention, further conversion phosphors.
- the emission-converting material according to the invention contains a mixture of at least two conversion phosphors, one of which is a compound according to the invention. It is particularly preferred that the at least two conversion phosphors are phosphors which emit light of different wavelengths which are complementary to one another. If the compound according to the invention is a red emitting phosphor, it is preferably used in combination with a green or yellow emitting phosphor or else with a cyan or blue emitting phosphor.
- the red-emitting conversion phosphor according to the invention can also be used in combination with (a) blue-emitting and green-emitting conversion phosphor (s) become.
- the red-emitting conversion phosphor according to the invention can also be used in combination with (a) green-emitting conversion phosphor (s). It may thus be preferred that the conversion phosphor according to the invention is used in combination with one or more further conversion phosphors in the emission-converting material according to the invention, which then together preferably emit white light.
- blue light is defined as light whose emission maximum lies between 400 and 459 nm, cyan light whose emission maximum is between 460 and 505 nm, green light whose emission maximum lies between 506 and 545 nm , as yellow light such, whose emission maximum lies between 546 and 565 nm, as orange light such, whose
- the compound of the invention is preferably a red-emitting conversion phosphor.
- BaSrMgSi 2 O 7 Eu 2+, BaTiP 2 0 7, (Ba, Ti) 2 P 2 0 7: Ti, Ba 3 W0 6: U,
- BaY2F 8 Er 3+ , Yb + , Be 2 SiO 4: Mn 2+ , Bi 4 Ge 3 0i 2 , CaAl 2 O 4 : Ce 3+ , CaLa 4 07: Ce 3+ , CaAl 2 04: Eu 2+ , CaAl 2 O 4 : Mn 2+ , CaAl 4 0 7 : Pb 2+ , Mn 2+ , CaAl 2 O 4 : Tb 3+ ,
- Ca3AI 2 Si3Oi 2 Ce 3+
- Ca3AI 2 Si30i 2 Ce 3+
- Ca3AI 2 SI30 2 Eu 2+
- Ca 2 B 5 09Br Eu 2+
- CaB 2 O 4 Pb 2+
- CaB 2 P 2 09 Eu 2+
- Ca 5 B 2 SiOio Eu 3+
- Cao.5Bao.5Ali 2 Oi9 Ce 3+ , Mn 2+ , Ca 2 Ba 3 (PO 4 ) 3 CI: Eu 2+ , CaBr 2 : Eu 2+ in SiO 2 , CaCl 2 : Eu 2+ in SiO 2 , CaCl 2 : Eu 2+ , Mn 2+ in SiO 2 , CaF 2 : Ce 3+ , CaF 2 : Ce 3+ , Mn 2+ , CaF 2 : Ce 3+ , Tb 3+ , CaF 2 : Eu 2+ , CaF 2 : Mn 2+ , CaF 2 : U, CaGa 2 O 4 : Mn 2+ ,
- CaGa 4 07 Mn 2+ , CaGa 2 S 4 : Ce 3+ , CaGa 2 S 4 : Eu + , CaGa 2 S 4 : Mn 2+ ,
- CaGa 2 S 4 Pb 2+ , CaGeO 3 : Mn 2+ , Cal 2 : Eu 2+ in SiO 2 , Cal 2 : Eu 2+ , Mn 2+ in
- Ca 2 P 2 O 7 Ce 3+ , ⁇ -Ca 3 (PO 4) 2 : Ce 3+ , ⁇ -Ca 3 (PO 4) 2: Ce 3+ , Ca 5 (PO 4) 3 Cl: Eu 2+ , Ca 5 (PO 4) 3 Cl: Mn 2+, Ca 5 (PO 4) 3 Cl: Sb 3+, Ca 5 (PO 4) 3 Cl: Sn 2+,
- ⁇ -Ca 3 (PO 4 ) 2 Eu 2+ , Mn 2+ , Ca 5 (PO 4 ) 3 F: Mn 2+ , Ca s (PO 4 ) 3 F: Sb 3+ , Ca s (PO 4) 3 F : Sn 2+ , ⁇ -Ca 3 (PO 4) 2: Eu 2+ , ⁇ -Ca 3 (PO 4) 2 : Eu 2+ , Ca 2 P 2 O 7: Eu 2+ , Ca 2 P 2 O 7: Eu 2+ , Mn + , CaP 2 O 6 : Mn 2+ , ⁇ -Ca 3 (PO 4) 2 : Pb 2+ , ⁇ -Ca 3 (PO 4) 2: Sn 2+ , ⁇ -Ca 3 (PO 4) 2: Sn 2+ , ⁇ -Ca 3 (PO 4) 2: Sn 2+ , ⁇ -Ca 2 P 2 O 7 : Sn, Mn, ⁇ -Ca 3 (PO 4 ) 2:
- CaTiO 3 Eu 3+ , CaTiO 3 : Pr 3+ , Ca 5 (VO 4) 3 Cl, CaWO 4 , CaWO 4 : Pb 2+ , CaWO 4 : W, Ca 3 WO 6 : U, CaYAIO 4 : Eu 3+ , CaYBO 4 : Bi 3+ , CaYBO4.Eu 3+ , CaYBo.8O 3 . 7 : Eu 3+ , CaY 2 ZrO 6 : Eu 3+ , (Ca, Zn, Mg) 3 (PO 4) 2: Sn, CeF 3 , (Ce, Mg) BaAlnOi 8: Ce,
- GdNbO 4 Bi 3+ , Gd 2 O 2 S: Eu 3+ , Gd 2 O 2 Pr 3+ , Gd 2 O 2S: Pr, Ce, F, Gd 2 O 2 S: Tb 3+ ,
- LiAIF 4 Mn 2+ , LiAl 5 O 8 : Fe 3+ , LiAIO 2 : Fe 3+ , LiAIO 2 : Mn 2+ , LiAl 5 O 8 : Mn 2+ ,
- Li2CaP2O 7 Ce 3+, Mn 2+, LiCeBa4Si 4 Oi 4: Mn 2+, LiCeSrBa 3 Si 4 OI4: Mn 2+,
- MgBaP 2 O 7 Eu 2+
- MgBaP 2 O 7 Eu 2+
- Mn 2+, MgBa 3 Si 2 O 8 Eu 2+
- SrB 4 O 7 Eu 2+ (F, Cl, Br), SrB 4 Or: Pb 2+ , SrB 4 07: Pb 2+ , Mn 2+ , SrB 8 Oi 3 : Sm 2+ , Sr x Ba y ClzAI 2 04- z / 2: Mn 2+ , Ce 3+ , SrBaSiO 4: Eu 2+ , Sr (CI, Br, I) 2 : Eu 2+ in SiO 2 , SrCl 2 : Eu 2+ in SiO 2 , Sr 5 CI (PO 4 ) 3: Eu, SrwFxB4O 6 .5: Eu 2+ , SrwFxB y O z : Eu 2+ , Sm 2+ , SrF 2 : Eu 2+ , SrGai 2 0i 9 : Mn 2+ , SrGa 2 S 4 : Ce 3 + , SrGa 2 S 4 : Eu 2+
- Sr 5 (PO 4 ) 3 F Sb 3+ , Mn 2+ , Sr 5 (PO 4 ) 3 F: Sn 2+ , Sr 2 P 2 O 7 : Sn 2+ , ⁇ -Sr 3 (PO 4) 2: Sn 2+ , ß-Sr3 (P04) 2: Sn 2+, Mn 2+ (AI), SrS: Ce 3+, SrS: Eu 2+, SrS: Mn 2+, SrS: Cu +, Na, SrS0 4: Bi, SrS0 4 : Ce 3+ , SrS0 4 : Eu 2+ , SrSO 4 .Eu 2+ , Mn 2+ , Sr 5 Si 4 OioCl 6: Eu 2+ ,
- Th0 2 Eu 3+
- Th0 2 Pr 3+
- Th0 2 Tb 3+
- YAl 3 B40i 2 Bi 3+
- YAl 3 B 4 0i 2 : Ce 3+
- YAl 3 B 4 O 2 Ce 3+ , Mn
- YAl 3 B 4 O 2 Ce 3+ , Tb 3+
- YAl 3 B 4 0i 2 Eu 3+
- YAI 3 B40i 2 Eu 3+ , Cr 3+ , YAI 3 B40i 2 : Th 4+ > Ce 3+ > Mn 2+ , YAlO 3 : Ce 3+ , Y 3 Al 5 0i 2 : Ce 3+ , Y 3 Al50i 2 : Cr 3+ , YAlO 3 : Eu 3+ , Y 3 Al 5 O 2 : Eu 3r , Y 4 Al 2 O 9 : Eu 3+ , Y 3 Al 5 O 2 : Mn 4+ , YAlO 3 : Sm 3+ , YAlO 3 : Tb 3+ , Y 3 Al 5 Oi 2 : Tb 3+ , YAsO 4: Eu 3+ , YBO 3 : Ce 3+ , YBO 3 : Eu 3+ , YF 3 : Er 3+ , Yb 3 + , YF 3 : Mn 2+ , YF 3 : Mn 2+
- YOCI Eu 3+ , YOF: Eu 3+ , YOF: Tb 3+ , Y 2 O 3 : Ho 3+ , Y 2 O 2 S: Eu 3+ , Y 2 O 2 S: Pr 3+ , Y 2 0 2 S: Tb 3+, Y 2 0 3: Tb 3+, YP0 4: Ce 3+, YP04: Ce 3+, Tb 3+, YPO 4: Eu 3+,
- ⁇ 0 4 ⁇ 2+ , ⁇ 4+ , YPO 4 : V 5+ , Y (P, V) 0 4 : Eu, Y 2 Si0 5 : Ce 3+ , YTa0 4 , YTa0 4 : Nb 5+ , YV0 4 : Dy 3+ , YVO 4 : Eu 3+ , ZnAl 2 O 4 : Mn 2+ , ZnB 2 04: Mn 2+ , ZnBa 2 S 3 : Mn 2+ ,
- Zn 2 Ge0 4 Mn 2+ , (Zn, Mg) F 2 : Mn 2+ , ZnMg 2 (PO 4 ) 2 : Mn 2+ , (Zn, Mg) 3 (PO 4 ) 2 : Mn 2+ , ZnO: Al 3+ , Ga 3+ , ZnO: Bi 3+ , ZnO: Ga 3+ , ZnO: Ga, ZnO-CdO: Ga, ZnO: S ( ZnO: Se, ZnO: Zn, ZnS: Ag + , Cl-, ZnS: Ag, Cu, Cl, ZnS: Ag, Ni, ZnS: Au, In, ZnS-CdS (25-75), ZnS-CdS (50-50), ZnS-CdS (75-25), ZnS-CdS : Ag, Br, Ni, ZnS-CdS: Ag ⁇ Cl, ZnS-CdS: Cu, Br, ZnS-CdS
- ZnS Te, Mn, ZnS-ZnTe: Mn 2+ , ZnSe: Cu + , Cl or ZnWO 4 .
- the emission-converting material according to the invention is used in a light source.
- the light source is an LED, in particular a phosphor-converted LED, in short pc-LED.
- the emission-converting material comprises, in addition to the conversion luminescent material according to the invention, at least one further conversion luminescent material, in particular such that the light source emits white light or light with a specific color point (color-on-demand principle).
- Color-on-demand principle means the realization of light of a particular color point with a pc-LED using one or more conversion phosphors.
- Another object of the present invention is thus a light source, the primary light source and the emission-converting
- the emission-converting material in addition to the conversion phosphor according to the invention comprises at least one further conversion luminescent material, so that the light source preferably emits white light or light with a specific color point.
- the light source according to the invention is preferably a pc-LED.
- a pc-LED usually contains a primary light source and an emission conver- animal material.
- the emission-converting material according to the invention can either be dispersed in a resin (for example epoxy or silicone resin) or with suitable proportions directly on the primary light source or remotely, depending on the application (the latter arrangement also includes the "Remote Phosphor Technology " with a).
- the primary light source may be a semiconductor chip, a luminescent light source such as ZnO, a so-called TCO (Transparent Conducting Oxide), a ZnSe or SiC based device, an organic light emitting layer based device (OLED), or a plasma or discharge source preferably a semiconductor chip.
- a semiconductor chip it is preferably a luminescent indium-aluminum-gallium nitride (InAIGaN), as known in the art.
- InAIGaN luminescent indium-aluminum-gallium nitride
- the person skilled in possible forms of such primary light sources are known.
- lasers as a light source.
- the emission-converting material according to the invention can be converted for use in light sources, in particular pc LEDs, into any external forms such as spherical particles, platelets and structured materials and ceramics. These forms are under the term
- Another subject of the invention is a lighting unit which contains at least one light source according to the invention.
- Such lighting units are mainly used in display devices, in particular liquid crystal display devices (LC display) with a backlight. Therefore, such a display device is the subject of the present invention.
- LCD display liquid crystal display devices
- the primary light source in particular semiconductor chips
- the primary light source is installed and this is optically coupled by means of light-conducting devices, such as photoconductive fibers, to the emission-converting material.
- the illumination requirements adapted lights consisting of one or more different conversion phosphors, which may be arranged to a fluorescent screen, and a light guide, which is coupled to the primary light source realize.
- Powder emission spectra are measured by the following general procedure: A phosphor powder bed having a depth of 5 mm, the surface of which has been smoothed out with a glass plate, becomes the integration sphere of a Edinburgh fluorescence spectrometer
- Instruments FL 920 irradiated with a xenon lamp as an excitation light source at a wavelength of 450 nm and the intensity of the emitted fluorescence radiation in a range of 465 nm to 800 nm in 1 nm steps measured.
- a mass of ITILS (in g) of the phosphor listed in each LED example is weighed and mixed with msiiikon (in g) of an optically transparent silicone and then homogeneously mixed in a planetary centrifugal mixer, so that the phosphor concentration in the total mass CLS (in wt.%).
- the resulting silicone-phosphor mixture is applied by means of an automatic dispenser on the chip of a near-UV semiconductor LED and cured with heat.
- the near-UV semiconductor LEDs used in the present examples for LED characterization have an emission wavelength of 407 nm and are operated at 350 mA current.
- the light-technical characterization of the LED is carried out with a spectrometer from the company Instrument Systems - spectrometer CAS 140 and an associated integrating sphere ISP 250.
- the LED is characterized by determining the wavelength-dependent spectral power density.
- the resulting spectrum of the light emitted by the LED is used to calculate the
- Color point coordinates CIE x and y used.
- Example 5 (from Example 5) (from Example 4) (from Example 2) (from Example 1) rriLs / g 0.350 0.350 0.350 0.350 m Silicone 0.650 0.650 0.650 0.650 0.650
- FIG. 1 XRD of Mg 3 (BN 2) N: Eu 2+ from Example 1
- FIG. 2 Reflectance spectrum of Mg 3 (BN 2) N: Eu 2+ from Example 1
- FIG. 3 Excitation spectrum of Mg 3 (BN 2) N: Eu 2+ from Example 1
- FIG. 4 Emission spectrum of Mg 3 (BN 2) N: Eu 2+ from Example 1
- FIG. 5 XRD of Ca3 (BN2> 2: Eu 2+ from Example 2
- FIG. 6 Reflectance spectrum of Ca 3 (BN 2) 2: Eu 2+ from Example 2
- FIG. 7 Excitation spectrum of Ca3 (BN2) 2: Eu 2+ from Example 2
- FIG. 9 X-ray powder diffractogram of Sr 3 (BN 2) 2: Eu 2+ from Ex. 3
- FIG. 11 Excitation spectrum of Sr 3 (BN 2) 2: Eu 2+ from Example 3
- FIG. 12 Reflectance spectrum of Sr 3 (BN 2) 2: Eu 2+ from Example 3
- FIG. 13 X-ray powder diffractogram of SrBae (BN 2) 6: Ce 3+ from Ex. 4
- FIG. 14 Emission spectrum of SrBas (BN 2) 6: Ce 3+ from Example 4
- FIG. 15 Excitation spectrum of SrBa8 (BN 2) 6: Ce 3+ from Example 4
- FIG. 16 Reflectance spectrum of SrBa8 (BN 2) 6: Ce 3+ from Example 4
- FIG. 17 X-ray powder diffractogram of SrBas (BN 2) 6: Pr 3+ from Example 5
- FIG. 18 Emission spectrum of SrBae (BN 2) 6: Pr 3+ from Example 5
- FIG. 19 Excitation spectrum of SrBas (BN 2) 6: Pr 3+ from Example 5
- FIG. 20 Reflectance spectrum of SrBas (BN 2) 6: Pr 3+ from Example
- FIG. 21 X-ray powder diffractogram of Sr 2BN 2 F: Eu 2+ from Example 6
- FIG. 22 Emission spectrum of Sr 2BN 2 F: Eu 2+ from Example 6
- FIG. 24 Reflectance spectrum of Sr 2BN 2 F: Eu 2+ from Example 6
- FIG. 25 LED example a with the phosphor from example 5
- FIG. 26 LED example b with the phosphor from example 4
- FIG. 27 LED example c with the phosphor from example 2
- FIG. 28 LED example d with the phosphor from example 1
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Abstract
Description
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KR102486988B1 (en) * | 2017-09-22 | 2023-01-10 | 삼성디스플레이 주식회사 | Light emitting diode and light emitting diode display including the same |
JP7235965B2 (en) * | 2018-04-10 | 2023-03-09 | 日亜化学工業株式会社 | Boron nitride phosphor and manufacturing method thereof |
US11162025B2 (en) | 2018-04-10 | 2021-11-02 | Nichia Corporation | Boron nitride fluorescent material, and method for producing the same |
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