Luminescence characteristics of Yb, La codoped yttrium oxide nanopowders |
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| Authors: | Chuanguo Dou Jun Xu |
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| Institution: | a School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
b Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | Luminescence characteristics of Yb3+, La3+ codoped yttrium oxide nanopowders were investigated. The grain size and the crystallinity of (Yb0.05Y0.90La0.05)2O3 nanopowders increase with the increase of calcination temperature. The average grain size of the nanopowders calcined at 1100 °C is 66 nm and its cooperative up-conversion luminescence centered at 498 nm was detected due to nanometer size effect and perfect crystallinity. However, the cooperative up-conversion luminescence of (Yb0.05Y0.90La0.05)2O3 transparent ceramics was not detected. |
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| Keywords: | 73 63 Bd 74 25 Gz 78 67 &minus n 78 67 Bf |
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