C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 11/81 (2006.01) H01J 61/44 (2006.01)
Patent
CA 2659033
The present invention relates to a new type of green luminophore composed of mixed rare-earth phosphates, and a method of preparation of these new luminophores from precursors comprising particles having a mean diameter of between 1.5 and 15 microns, these particles comprising an inorganic core and a shell composed of a mixed lanthanum and/or cerium phosphate, optionally doped with terbium, evenly covering the inorganic core with a thickness greater than or equal to 300 nm.
La présente invention a trait à un nouveau type de luminophores verts à base de phosphates mixtes terres rares, ainsi qu'à un procédé de préparation de ces nouveaux luminophores à partir de précurseurs comprenant des particules ayant un diamètre moyen compris entre 1,5 et 15 microns, ces particules comprenant un coeur minéral et une coquille à base d'un phosphate mixte de lanthane et/ou cérium, éventuellement dopé par du terbium, recouvrant de façon homogène le coeur minéral sur une épaisseur supérieure ou égale à 300 nm.
Buissette Valerie
Le-Mercier Thierry
Rhodia Operations
Robic
LandOfFree
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