Method to produce nanocrystalline powders of oxide-based phosphors for lighting applications

US7311859B1 · kind B1 · utility

Assignee

• General Electric Company · US

Inventors

• Sergio Paulo Martins Loureiro · Saratoga Springs, US
• Anant Achyut Setlur · Niskayuna, US
• Darryl Williams · Albuquerque, US
• Mohan Manoharan · Bengaluru, IN
• Alok Mani Srivastava · San Francisco, US

Key dates

• Filing date: Nov 17, 2004
• Grant date: Dec 25, 2007
• Expiry date: Aug 3, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Some embodiments of the present invention are directed toward nanocrystalline oxide-based phosphor materials, and methods for making same. Typically, such methods comprise a steric entrapment route for converting precursors into such phosphor material. In some embodiments, the nanocrystalline oxide-based phosphor materials are quantum splitting phosphors. In some or other embodiments, such nanocrystalline oxide based phosphor materials provide reduced scattering, leading to greater efficiency, when used in lighting applications.