发明名称 |
Wavelength Converter for an LED, Method of Making, and LED Containing Same |
摘要 |
A wavelength converter for an LED is described that comprises a substrate of monocrystalline garnet having a cubic crystal structure, a first lattice parameter and an oriented crystal face. An epitaxial layer is formed directly on the oriented crystal face of the substrate. The layer is comprised of a monocrystalline garnet phosphor having a cubic crystal structure and a second lattice parameter that is different from the first lattice parameter wherein the difference between the first lattice parameter and the second lattice parameter results in a lattice mismatch within a range of ±15%. The strain induced in the phosphor layer by the lattice mismatch shifts the emission of the phosphor to longer wavelengths when a tensile strain is induced and to shorter wavelengths when a compressive strain is induced. Preferably, the wavelength converter is mounted on the light emitting surface of a blue LED to produce an LED light source.
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申请公布号 |
US2013313603(A1) |
申请公布日期 |
2013.11.28 |
申请号 |
US201213982667 |
申请日期 |
2012.01.31 |
申请人 |
KUNDALIYA DARSHAN;RAUKAS MADIS;SCOTCH ADAM M.;HAMBY DAVID;MISHRA KAILASH;STOUGH MATTHEW;OSRAM SYLVANIA INC. |
发明人 |
KUNDALIYA DARSHAN;RAUKAS MADIS;SCOTCH ADAM M.;HAMBY DAVID;MISHRA KAILASH;STOUGH MATTHEW |
分类号 |
H01L33/50;C09K11/77;C30B23/02;C30B23/06;C30B29/68 |
主分类号 |
H01L33/50 |
代理机构 |
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地址 |
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