LUMINOPHORES MADE OF DOPED GARNET FOR PCLEDS
First Claim
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1. Phosphor having a garnet structure of the formula I
(Ya,Gdb,Luc,Sed,Sme,Tbf,Prg,Thh,Iri,Sbj,Bik)3-x(All,Gam)5O12:
- Cex
(I)wherea+b+c+d+e+f+g+h+i+j+k=1l+m=1 andx=0.005 to 0.1.
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Abstract
The invention relates to phosphors having a garnet structure of the formula I
(Ya,Gdb,Luc,Sed,Sme,Tbf,Prg,Thh,Iri,Sbj,Bik)3-x(All,Gam)5O12:Cex (I)
- where
- a+b+c+d+e+f+g+h+i+j+k=1
- l+m=1 and
- x=0.005 to 0.1,
and to a process for the preparation of these phosphors, and to the use thereof as conversion phosphors for conversion of the blue or near-UV emission from an LED.
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Citations
25 Claims
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1. Phosphor having a garnet structure of the formula I
(Ya,Gdb,Luc,Sed,Sme,Tbf,Prg,Thh,Iri,Sbj,Bik)3-x(All,Gam)5O12:- Cex
(I)where a+b+c+d+e+f+g+h+i+j+k=1 l+m=1 and x=0.005 to 0.1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- Cex
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10. Process for the preparation of a phosphor having a garnet structure of the formula I, having the following process steps:
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a) preparation of a cerium-activated phosphor which is co-doped with antimony-, bismuth-, iridium- and/or thorium-containing materials from phosphor precursor suspensions or solutions by mixing at least three starting materials selected from Y-, Al-, Ce-, Gd-, Lu-, Sc-, Sm-, Tb-, Pr- and/or Ga-containing materials by wet-chemical methods, b) thermal aftertreatment of the phosphor co-doped with antimony, bismuth, iridium and/or thorium. - View Dependent Claims (11, 12, 13, 14)
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Specification