Title:
前駆体を四ホウ酸リチウムの存在下で熱処理することによって製造されるコアシェル型蛍光体
Document Type and Number:
Japanese Patent JP2013521358
Kind Code:
A
Abstract:
A method of producing a phosphor is described in which a precursor including particles having an average diameter from 1.5 micrometers to 15 micrometers is heat-treated under a reducing atmosphere. The method can produce particles including a mineral core and a shell including a composite phosphate of lanthanum and/or cerium, optionally doped with terbium. The composite phosphate of lanthanum and/or cerium covers the mineral core uniformly over a thickness greater than or equal to 300 nm. The aforementioned heat treatment at a temperature of 1050° C. to 1150° C. and for a time period of 2 hours to 4 hours can involve the use of lithium tetraborate (Li2B4O7), which serves as a fluxing agent, in a mass quantity of at most 0.2%.
Inventors:
View set, valery
Le Mercier, Teyeri
Le Mercier, Teyeri
Application Number:
JP2012555379A
Publication Date:
June 10, 2013
Filing Date:
February 28, 2011
Export Citation:
Assignee:
Rodia Opera
International Classes:
C09K11/81; C09K11/00; C09K11/08; F21V9/08; H01L33/50; F21Y101/02; F21Y103/00; F21Y105/00
Attorney, Agent or Firm:
Kawaguchi International Patent Office