Invention Grant
- Patent Title: Color stable red-emitting phosphors
- Patent Title (中): 颜色稳定的红色发光荧光粉
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Application No.: US14311624Application Date: 2014-06-23
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Publication No.: US08906724B2Publication Date: 2014-12-09
- Inventor: James Edward Murphy , Anant Achyut Setlur , Florencio Garcia , Robert Joseph Lyons , Ashfaqul Islam Chowdhury , Nagaveni Karkada , Prasanth Kumar Nammalwar
- Applicant: General Electric Company
- Applicant Address: US NY Niskayuna
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Niskayuna
- Agent Mary Louise Stanford
- Main IPC: H01L21/00
- IPC: H01L21/00 ; H01L33/50 ; H01L33/52 ; C09K11/61
Abstract:
A process for synthesizing a color stable Mn4+ doped phosphor includes contacting a precursor of formula I, in gaseous form at an elevated temperature with a fluorine-containing oxidizing agent to form the color stable Mn4+ doped phosphor Ax[MFy]:Mn4+ I wherein A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7.
Public/Granted literature
- US20140327026A1 COLOR STABLE RED-EMITTING PHOSPHORS Public/Granted day:2014-11-06
Information query
IPC分类:
