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Efficiently up-conversion luminescence can be achieved by replacing the traditional sensitizer Yb3+ ions with Er3+ ions in LaVO4 host under 1550nm excitation. In contrast to other up-conversion luminescence materials, such as Y2O2S:Er3+, Y2O3:Er3+, YOCl:Er3+, which exhibit red emission, LaVO4:Er3+ samples present an abnormal green emission under 1550nm excitation. Excited state absorption is the dominating...
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