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:
Oct. 06, 2015
Filed:
Dec. 11, 2010
Jianwei Han, Guangdong, CN;
Xingren Liu, Guangdong, CN;
Yuqing Tong, Guangdong, CN;
SHENZHEN POLYTECHNIC, Shenzhen, Guangdong, CN;
Abstract
The invention provides a red fluorescent material of which the chemical formula is (LiMM)(GdEuLn)(MoO)(WO)(A). The invention further provides a preparation method of the red fluorescent material, and an electric light source prepared from the red fluorescent material and a preparation method of the electric light source. The invention has the beneficial effect that the red fluorescent material uses Euions as the main activator; under the excitation of near ultraviolet light or blue light emitted by a semiconductor LED chip, the red fluorescent material has high light conversion efficiency, and emits light in a mode of red sharp lines of characteristic 4f electron-configurationD−>Fenergy level transition of Eu; and the red fluorescent material has high color purity, high emissive power and stable performance.