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The paper reports a new up-conversion luminescence material based on Yb 3+, Er3+ co-doped germanate glass ceramic, the matrix system is GeO2-PbF2-Nb2O5. The luminescence characteristics of the Yb3+ , Er3+ co-doped glass ceramic have been studied. The structural properties of the germinate glass ceramic have been analysed by X-ray diffraction. Under the condition of 980nm semiconductor laser pumping, the green fluorescence intensity shows that the existence of niobate components plays an important role for up-conversion luminescence.
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