期刊
OPTICS LETTERS
卷 38, 期 17, 页码 3340-3343出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.38.003340
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资金
- National Talent Youth Science Foundation of China [60925018]
- National Natural Science Foundation of China [61204015, 51002062, 11174111, 61177042, 81201738]
- China Postdoctoral Science Foundation [2012M511337]
In this Letter, we present the observation of super-intense upconversion (UC) white emission of Yb2O3 under 980 nm excitation, its evolution on excitation power density, the UC mechanism, and its application on the luminescence converter of dye-sensitized solar cells (DSSCs). It is significant to observe that Yb2O3 demonstrates at least one order more intense UC luminescence than beta-phase NaYF4:Yb3+, Er3+ and Yb2O3/DSSCs exhibit much better photovoltaic performance than beta-phase NaYF4:Yb3+, Er3+/DSSCs under strong excitation. This indicates that Yb2O3 would become a novel candidate of the solar energy converter, especially in the application of concentrator solar cells. (C) 2013 Optical Society of America
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