Physical characteristics and infrared fluorescence properties of sol-gel derived Er3+-Yb3+ codoped TiO2

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机构：
[1] Ting, Chu-Chi
[2] Chen, San-Yuan
[3] Lee, Hsin-Yi
来源：
Lee, H.-Y. (hylee@srrc.gov.tw) | 1600年 / American Institute of Physics Inc.卷 / 94期
关键词：
Annealing - Doping (additives) - Erbium - Fluorescence - Photoluminescence - Positive ions - Titanium dioxide - Ytterbium;
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摘要：
Physical characteristics and infrared fluorescence properties of sol-gel derived Er3+ - Yb3+ codoped TiO2 were presented. Maximum ∼1.54 μm photoluminescence (PL) intensity was obtained for the Er3+ (5 mol%)-Yb3+ (30 mol%) codoped TiO2 sample annealed at 700°C. It was found that when the concentration of Yb3+ ions reached 50 mol%, the back energy transfer effect from Er3+ to Yb3+ deteriorates the ∼1.54 μm PL efficiency.
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