Title:
場合によりランタンを有するリン酸セリウムおよび/またはリン酸テルビウム、前記リン酸塩から生じる燐光体、ならびに該燐光体を作製する方法
Document Type and Number:
Japanese Patent JP5480909
Kind Code:
B2
Abstract:
A rare earth element phosphate (Ln) is described, wherein Ln is either: (1) at least one rare earth element selected from cerium and terbium, or (2) lanthanum in combination with at least one of the above two rare earth elements, and wherein the phosphate has a crystalline structure of the rhabdophane type or of the monazite type with a lithium content of at most 300 ppm. The phosphate is obtained by the precipitation of a rare earth element chloride at a constant pH lower than 2, and then calcining and redispersing the same in hot water. A phosphor obtained by calcining the phosphate at at least 1000° C. is also described.
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Inventors:
View set, valery
Le Mercier, Teyeri
Le Mercier, Teyeri
Application Number:
JP2011536856A
Publication Date:
April 23, 2014
Filing Date:
November 18, 2009
Export Citation:
Assignee:
Rodia Opera
International Classes:
C01B25/26; C09K11/08; C09K11/81; H01J11/22; H01J61/44
Domestic Patent References:
| JP2276884A | ||||
| JP59020378A | ||||
| JP57133182A | ||||
| JP3634282B2 | ||||
| JP9249879A | ||||
| JP8085787A | ||||
| JP54013479A | ||||
| JP2008248052A |
Foreign References:
| US3634282 |
Other References:
L.Karpowich, et al.,Synthesis and characterization of mixed-morphology CePO4 nanoparticles,Journal of Solid State Chemistry,ELSEVIER,2006年12月15日,Vol.180,pp.840-846
Michelle CHAUCHARD, et al.,INFLUENCE DU LITHIUM SUR LES PROPRIETES OPTIQUES DE L'ORTHOPHOSPHATE DE LANTHANE DOPE AVEC Eu3+, Tb3+, Ce3+-Tb3+,Mat.Res.Bull.,1989年,Vol.24,pp.1303-1315
Ziyang Huo, et al.,Self-assembly of uniform hexagonal yttrium phosphate nanocrystals,Chem.Commun.,英国,The Royal Society of Chemistry,2006年,pp.3522-3524
Arnaud Huignard, et al.,Synthesis and Luminescence Properties of Colloidal YVO4:Eu Phosphors,Chem.Mater.,米国,American Chemical Society,2000年 3月29日,Vol.12,pp.1090-1094
Michelle CHAUCHARD, et al.,INFLUENCE DU LITHIUM SUR LES PROPRIETES OPTIQUES DE L'ORTHOPHOSPHATE DE LANTHANE DOPE AVEC Eu3+, Tb3+, Ce3+-Tb3+,Mat.Res.Bull.,1989年,Vol.24,pp.1303-1315
Ziyang Huo, et al.,Self-assembly of uniform hexagonal yttrium phosphate nanocrystals,Chem.Commun.,英国,The Royal Society of Chemistry,2006年,pp.3522-3524
Arnaud Huignard, et al.,Synthesis and Luminescence Properties of Colloidal YVO4:Eu Phosphors,Chem.Mater.,米国,American Chemical Society,2000年 3月29日,Vol.12,pp.1090-1094
Attorney, Agent or Firm:
Kawaguchi International Patent Office
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