Invention Grant
- Patent Title: Red-emitting nitride-based calcium-stabilized phosphors
- Patent Title (中): 红色发光氮化物基钙稳定荧光体
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Application No.: US13922231Application Date: 2013-06-19
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Publication No.: US08597545B1Publication Date: 2013-12-03
- Inventor: Shengfeng Liu , Yi-Qun Li , Ka Y. Leung , Dejie Tao
- Applicant: Intematix Corporation
- Applicant Address: US CA Fremont
- Assignee: Intematix Corporation
- Current Assignee: Intematix Corporation
- Current Assignee Address: US CA Fremont
- Agency: Pillsbury Winthrop Shaw Pittman LLP
- Agent David H. Jaffer
- Main IPC: C09K11/59
- IPC: C09K11/59 ; H01L33/00
Abstract:
Red-emitting phosphors may comprise a nitride-based composition represented by the chemical formula MaSrbSicAldNeEuf, wherein: M is at least one of Mg, Ca, Sr, Ba, Y, Li, Na, K and Zn, and 0 2+d/v and v is the valence of M. Furthermore, nitride-based red-emitting phosphor compositions may be represented by the chemical formula MxM′2Si5−yAlyN8:A, wherein: M is Mg, Ca, Sr, Ba, Y, Li, Na, K and Zn, and x>0; M′ is at least one of Mg, Ca, Sr, Ba, and Zn; 0≦y≦0.15; and A is at least one of Eu, Ce, Tb, Pr, and Mn; wherein x>y/v and v is the valence of M, and wherein the red-emitting phosphors have the general crystalline structure of M′2Si5N8:A.
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