Rare earth doped host materials

Details Rare earth doped host materials Rare earth doped host materials

C - Chemistry, Metallurgy

09

K

C09K 11/59 (2006.01) C09K 11/08 (2006.01) C09K 11/61 (2006.01) C09K 11/62 (2006.01) C09K 11/77 (2006.01) C09K 11/88 (2006.01) H01J 1/63 (2006.01)

Patent

CA 2366362

A rare earth element doped composition having a dopant concentration of up to about 60 mole percent of one or more rare earth elements selected from Tb, Dy, Ho, Er, Tm, Yb and Lu, wherein the composition is optically transparent to wavelengths at which excitation, fluorescence or luminescence of the rare earth elements occur. Method for making the compositions, composite materials having dispersed therein the compositions and luminescent devices containing optical or acoustical elements formed from the composite materials are also disclosed.

L'invention concerne une composition dopée aux terres rares, dont la concentration en dopants peut atteindre environ 60 % en moles d'au moins une terre rare sélectionnée parmi Tb, Dy, Ho, Er, Tm, Yb et Lu. La composition est optiquement transparente aux longueurs d'ondes qui, lorsqu'elles sont excitées, provoquent la fluorescence ou la luminescence des terres rares. L'invention concerne également des procédés de préparation de la composition, des matériaux composites dispersés dans la composition et des dispositifs luminescents comportant des éléments optiques ou acoustiques constitués des matériaux composites.

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