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.: US14285746Application Date: 2014-05-23
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Publication No.: US09580648B2Publication Date: 2017-02-28
- 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: C09K11/61
- IPC: C09K11/61 ; C09K11/67 ; H01L33/50
Abstract:
A color stable Mn4+ doped phosphor of formula I, 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; y is 5, 6 or 7; and wherein % intensity loss of the phosphor after exposure to light flux of at least 80 w/cm2 at a temperature of at least 50° C. for at least 21 hours is ≦4%.
Public/Granted literature
- US20140268655A1 COLOR STABLE RED-EMITTING PHOSPHORS Public/Granted day:2014-09-18
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