| Cooperative Quantum Cutting of Nano-Crystalline BaF2：Tb^3＋, Yb^3＋ in Oxyfluoride Glass Ceramics |
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| 引用本文： | 陈景鑫,叶松,王玺,邱建荣. Cooperative Quantum Cutting of Nano-Crystalline BaF2：Tb^3＋, Yb^3＋ in Oxyfluoride Glass Ceramics[J]. 中国物理快报, 2008, 25(6): 2078-2080 |
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| 作者姓名： | 陈景鑫 叶松 王玺 邱建荣 |
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| 作者单位： | State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 50672087 and 60778039, the National Basic Research Programme of China under Grant No 2006CB806007, the National High-Tech Research and Development Programme of China under Grant No 2006AA03Z304, and the Programme for Changjiang Scholars and Innovative Research Team in University （IRT0651）. |
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| 摘 要： | We report on cooperative quantum cutting in Tb^3＋- Yb^3＋ codoped glass ceramics. Precipitation of BaF2 nanocrystals is confirmed by XRD and HRTEM analysis. Near-infrared emission due to transition of Yb^3＋ ions under 485 nm excitation indicates cooperative energy transfer from Tb^3＋ to Yb^3＋. The quantum efficiency of this process reaches 145%. The realization of quantum cutting in glass ceramics may have promising applications in solar cells.
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| 关 键 词： | 氟氧化物玻璃陶瓷 量子切割 纳米晶结构 BaF2 |
| 收稿时间： | 2008-01-24 |
Cooperative Quantum Cutting of Nano-Crystalline BaF2:Tb3+, Yb3+ in Oxyfluoride Glass Ceramics |
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| CHEN Jing-Xin,YE Song,WANG Xi,QIU Jian-Rong. Cooperative Quantum Cutting of Nano-Crystalline BaF2:Tb3+, Yb3+ in Oxyfluoride Glass Ceramics[J]. Chinese Physics Letters, 2008, 25(6): 2078-2080 |
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| Authors: | CHEN Jing-Xin YE Song WANG Xi QIU Jian-Rong |
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| Affiliation: | State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027 |
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| Abstract: | We report on cooperative quantum cutting in Tb3+-Yb3+ codoped glass ceramics. Precipitation of BaF2 nano-crystals is confirmed by XRD and HRTEM analysis. Near-infrared emission due to transition of Yb3+ ions under 485nm excitation indicates cooperative energy transfer from Tb3+ to Yb3+. Thequantum efficiency of this process reaches 145%. The realization of quantum cutting in glass ceramics may have promising applications in solar cells. |
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| Keywords: | 42.70.Ce 52.70.Kz 42.50.-p |
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