Phosphor with afterglow characteristic

Details Phosphor with afterglow characteristic Phosphor with afterglow characteristic

C - Chemistry, Metallurgy

09

K

C09K 11/64 (2006.01) C09K 11/77 (2006.01)

Patent

CA 2191333

A phosphor exhibiting afterglow more intensely and persistently than (Sr, Eu, Dy)O.cndot.Al2O3 phosphors. The phoshor has a chemical composition comprising mainly an Eu2+ activated strontium aluminate phosphor substance as a matrix in which a part of the strontium (Sr) is substituted with at least one of Pb, Dy and Zn.

L'invention concerne une composition phosphorescente émettant une lumière plus intense et plus persistante que les compositions phosphorescentes usuelles constituées de (Sr, Eu, Dy)O.Al2O3. Cette composition est à base d'aluminate de strontium activé par Eu<2+>, au moins une partie des atomes de strontium étant remplacée par au moins un élément choisi parmi Pb, Dy et Zn.

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