Color stable red-emitting phosphors

US9376615B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• James Edward Murphy · Niskayuna, US
• Florencio Garcia · Schenectady, US
• Ashfaqul Islam Chowdhury · Broadview Heights, US
• Srinivas Prasad Sista · Niskayuna, US
• Anant Achyut Setlur · Niskayuna, US

Key dates

• Filing date: Nov 21, 2014
• Grant date: Jun 28, 2016
• Expiry date: Nov 21, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/181
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for synthesizing a Mn4+ doped phosphor includes contacting a precursor of formula I,at an elevated temperature with a fluorine-containing oxidizing agent in gaseous form to form the color stable Mn4+ doped phosphor;