The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2012
Filed:
Oct. 22, 2008
Anant Achyut Setlur, Niskayuna, NY (US);
Ramachandran Gopi Chandran, Bangalore, IN;
Claire Susan Henderson, Schenectady, NY (US);
Pransanth Kumar Nammalwar, Bangalore, IN;
Emil Radkov, Euclid, OH (US);
Anant Achyut Setlur, Niskayuna, NY (US);
Ramachandran Gopi Chandran, Bangalore, IN;
Claire Susan Henderson, Schenectady, NY (US);
Pransanth Kumar Nammalwar, Bangalore, IN;
Emil Radkov, Euclid, OH (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Embodiments of the present techniques provide a related family of phosphors that may be used in lighting systems to generate blue or blue-green light. The phosphors include systems having a general formula of: ((SrM)ACe)(AlSi)OF(I), wherein 0<x≦0.10, 0≦y≦0.5, 0≦z≦0.5, 0≦w≦x, A is Li, Na, K, Rb, or Ag or any combinations thereof, and M is Ca, Ba, Mg, Zn, or Sn or any combinations thereof. Advantageously, phosphors made accordingly to these formulations maintain emission intensity across a wide range of temperatures. The phosphors may be used in lighting systems, such as LEDs and fluorescent tubes, among others, to produce blue and blue/green light. Further, the phosphors may be used in blends with other phosphors, or in combined lighting systems, to produce white light suitable for illumination.