Invention Grant
- Patent Title: Phosphor Composition
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Application No.: US15234433Application Date: 2016-08-11
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Publication No.: US10266767B2Publication Date: 2019-04-23
- Inventor: Brian T. Collins , Christopher P. Hussell , David T. Emerson , Ronan P. Le Toquin
- Applicant: Cree, Inc.
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Brinks Gilson & Lione
- Main IPC: C09K11/77
- IPC: C09K11/77 ; C09K11/02 ; C04B35/597 ; C09K11/08 ; C04B35/58 ; C04B35/581 ; C04B35/584 ; C04B35/591 ; C04B35/593

Abstract:
A method is disclosed for forming a blended phosphor composition. The method includes the steps of firing precursor compositions that include europium and nitrides of at least calcium, strontium and aluminum, in a refractory metal crucible and in the presence of a gas that precludes the formation of nitride compositions between the nitride starting materials and the refractory metal that forms the crucible. The resulting compositions can include phosphors that convert frequencies in the blue portion of the visible spectrum into frequencies in the red portion of the visible spectrum.
Public/Granted literature
- US20160348000A1 Phosphor Composition Public/Granted day:2016-12-01
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