Luminescent nanomaterials powders having predetermined...

Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides

Reexamination Certificate

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C423S263000

Reexamination Certificate

active

06979415

ABSTRACT:
A method of making a luminescent nanomaterial having a plurality of nanoparticles. The luminescent nanomaterial includes at least one lanthanide group metal phosphate and at least one lanthanide series dopant, wherein each of the plurality of nanoparticles has a predetermined morphology. The luminescent nanomaterial has a high quantum efficiency and a high absorption value. The method yields a variety of morphologies and sizes of the plurality of nanoparticles. The particles size of the luminescent material varies from tens of nanometers to a few hundred of nanometers.

REFERENCES:
patent: 5580490 (1996-12-01), Collin et al.
patent: 0395775 (1990-11-01), None
Riwotzki et al, Liquid-Phase Synthesis of Colloids and Redispersible Powders of Strongly Luminescing LaPO4:Ce,Tb Nanocrystals:, Angew. Chem. Int. Ed. vol. 40, No. 3, 2001, pp. 573-576.
Karsten Kiwotzki, Heike Meyssamy, Heimo Schnablegger, Andreas Kornowski, and Markus Haase, Title: “Liquid-Phase Synthesis of Colloids and Redisperable Powders of Strongly Luminescing LaPO4:Ce,Tb Nanocrystals”; WILEY-VCH Verlag GmbH, D-69451 Weinheim, 2001; Angrew. Chem. Int. Ed. 2001, 40, No. 3; p.p. 573-576.

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