发明名称 |
YELLOW PHOSPHOR HAVING AN INCREASED ACTIVATOR CONCENTRATION AND A METHOD OF MAKING A YELLOW PHOSPHOR |
摘要 |
A yellow phosphor having an increased activator concentration includes a host lattice comprising yttrium aluminum garnet (YAG) and an activator comprising cerium in the host lattice, where the cerium is present at a concentration of at least about 5 wt. % Ce. A method of making a yellow phosphor includes forming a reaction mixture comprising: a first precursor comprising cerium and oxygen; a second precursor comprising cerium and fluorine; a third precursor comprising yttrium; and a fourth precursor comprising aluminum. The reaction mixture is heated in a reducing environment at a temperature sufficient to form a yellow phosphor including a host lattice comprising yttrium aluminum garnet and an activator comprising cerium (Ce) incorporated in the host lattice. |
申请公布号 |
US2014167600(A1) |
申请公布日期 |
2014.06.19 |
申请号 |
US201213714992 |
申请日期 |
2012.12.14 |
申请人 |
CREE, INC. |
发明人 |
Todorov Iliya S.;Collins Brian T. |
分类号 |
C09K11/77;H05B33/12 |
主分类号 |
C09K11/77 |
代理机构 |
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代理人 |
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主权项 |
1. A yellow phosphor having an increased activator concentration, the yellow phosphor comprising:
a host lattice comprising yttrium aluminum garnet (YAG); and an activator comprising cerium (Ce) in the host lattice, the cerium being present at a concentration of at least about 5 wt. % Ce.
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地址 |
Durham NC US |