Patent · US Active

Processes for preparing color stable red-emitting phosphors

US9868898B2 · kind B2 · utility

2Cited by

14References

18Claims

0Family size

Assignee

General Electric Company · US

Inventors

James Edward Murphy · Niskayuna, US
Fangming Du · Northfield, US
Anant Achyut Setlur · Niskayuna, US

Key dates

Filing date	Jun 30, 2016
Grant date	Jan 16, 2018
Priority date	—
Expiry date	Jun 30, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/8512
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Processes for preparing color stable Mn4+ doped phosphors include contacting a phosphor of formula I with a fluorine-containing oxidizing agent in gaseous form at temperature ≦225° C. to form the color stable Mn4+ doped phosphorwherein

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.