SMALL PARTICLE BLUE EMITTING LANTHANUM PHOSPHATE BASED PHOSPHORS FOR DISPLAY AND LAMP APPLICATIONS AND METHOD OF MAKING

Title:

SMALL PARTICLE BLUE EMITTING LANTHANUM PHOSPHATE BASED PHOSPHORS FOR DISPLAY AND LAMP APPLICATIONS AND METHOD OF MAKING

Document Type and Number:

WIPO Patent Application WO2000001784

Kind Code:

A9

Abstract:

Small particle lanthanum, thulium phosphate phosphors are produced by thermal decomposition of gels or solutions or powders including lanthanium, thulium, lithium and alkaline earth salts and an organic precursor, such as trimethyl phosphate and boric acid, at a temperature well below the normal temperature of solid state reaction. The phosphor of the present invention has the empirical formula: (Lal-x-y-zTmxLiySrz)PO4, wherein: 0.001

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Inventors:

RAO RAVILISETTY P

Application Number:

PCT/US1999/015191

Publication Date:

November 09, 2000

Filing Date:

July 06, 1999

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
GREELEY PAUL D (US)

International Classes:

C09K11/08; C09K11/77; C09K11/81; (IPC1-7): C09K11/70; C09K11/81; C09K11/71; C09K11/55

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