| 发明名称 | Light emitting diode (LED) component comprising a phosphor with improved excitation properties | ||
| 摘要 | A light emitting diode (LED) component comprises an LED having a dominant wavelength in a range of from about 425 nm to less than 460 nm and a phosphor in optical communication with the LED. The phosphor includes a host lattice comprising yttrium aluminum garnet (YAG), and may include an activator comprising Ce and a substitutional dopant comprising Ga incorporated in the host lattice. An emission spectrum of the phosphor has a maximum intensity in a wavelength range of from about 540 nm to about 570 nm, and an excitation spectrum of the phosphor comprises an intensity at 440 nm equivalent to at least about 85% of a maximum intensity of the excitation spectrum. | ||
| 申请公布号 | US9437788(B2) | 申请公布日期 | 2016.09.06 |
| 申请号 | US201414453878 | 申请日期 | 2014.08.07 |
| 申请人 | Cree, Inc. | 发明人 | Clatterbuck David M.;Seibel Harry A.;Kinkenon Douglas E. |
| 分类号 | H01L33/50;H01L33/56;C09K11/77 | 主分类号 | H01L33/50 |
| 代理机构 | Brinks Gilson & Lione | 代理人 | Brinks Gilson & Lione |
| 主权项 | 1. A phosphor with improved excitation properties, the phosphor comprising: a host lattice comprising yttrium aluminum garnet (YAG); and an activator comprising Ce and a substitutional dopant comprising Ga incorporated in the host lattice, wherein the phosphor comprises a chemical formula YaCebGdcAldGaeOz, where 0<a<3, 0<b≦0.6, 0≦c≦1, 0<d<5, 0<e≦2.5, and z is nominally 12, wherein R=(a+b+c)/(d+e), and 0.5≦R<0.6, and wherein an emission spectrum of the phosphor comprises a maximum intensity in a wavelength range of from about 540 nm to about 570 nm. | ||
| 地址 | Durham NC US | ||