| 简介 |
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. |
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