Novel silicate-based yellow-green phosphors
A technology of green phosphorescence and phosphor, which is applied to the use of luminescent materials, semiconductor devices, and gas discharge lamps, and can solve problems such as the reduction of blue light intensity
Active Publication Date: 2008-10-22
英特美光电(苏州)有限公司
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Problems solved by technology
In this case, the intensity of the blue light used as part of the white light illumination will be significantly reduced by the relatively thick layer of the yellow phosphor of Maeda et al.
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Abstract
Novel phosphor systems are disclosed having the formula A2SiO4:Eu<2+>D, where A is at least one of a divalent metal selected from the group consisting of Sr, Ca, Ba, Mg, Zn, and Cd; and D is a dopant selected from the group consisting of F, Cl, Br, I, S and N. In one embodiment, the novel phosphor has the formula (Sr1-x-yBaxMy)2SiO4: Eu<2+>F (where M is one of Ca, Mg, Zn, or Cd in an amount ranging from 0 C09K 11 / 59 C09K 11 / 55 H01L 33 / 00 16 17 4 2004 / 11 / 24 101292009 2008 / 10 / 22 000000000 Intematix Corp. United Wang Ning Dong Yi Cheng Shifan Li Yi-qun wangyuan fang liuguo wei 11287 United 2004 / 8 / 4 10 / 912,741 United 2004 / 9 / 22 10 / 948,764 2007 / 3 / 14 PCT / US2004 / 039638 2004 / 11 / 24 WO2006 / 022792 2006 / 3 / 2 English
Description
Novel yellow-green phosphors based on silicates References to related applications The present application is part of U.S. Patent Application Serial No. 10 / 912,741 filed August 4, 2004 and entitled "Novel phosphorsystems for awhitelight emitting diode (LED)" (inventors Yi Dong, Ning Wang, Shifan Cheng and Yi-Qun Li) Continuation case. US Patent Application Serial No. 10 / 912,741 is incorporated herein by reference in its entirety. technical field In general, embodiments of the present invention relate to novel silicate-based yellow and / or green phosphors (hereinafter referred to as yellow-green phosphors) for use in white lighting systems, such as white light-emitting diodes (LEDs). body). Specifically, the yellow-green phosphor of the present invention includes a silicate-based complex with at least one divalent alkaline earth metal element and at least one anion dopant, wherein the novel phosphor The optical properties are equal to or better than those of known YAG:Ce ...
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IPC IPC(8): C09K11/59C09K11/55H01L33/00H01L33/50
CPCY02B20/181H01L33/502C09K11/7734C09K11/592H01L33/504Y02B20/00C09K11/77342
Inventor 王宁董翊成世凡李依群
Owner 英特美光电(苏州)有限公司