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Cooperative Quantum Cutting of Nano-Crystalline BaF2:Tb3+, Yb3+ in Oxyfluoride Glass Ceramics |
CHEN Jing-Xin;YE Song;WANG Xi;QIU Jian-Rong |
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027 |
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Cite this article: |
CHEN Jing-Xin, YE Song, WANG Xi et al 2008 Chin. Phys. Lett. 25 2078-2080 |
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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+. 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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Keywords:
42.70.Ce
52.70.Kz
42.50.-p
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Received: 24 January 2008
Published: 31 May 2008
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PACS: |
42.70.Ce
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(Glasses, quartz)
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52.70.Kz
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(Optical (ultraviolet, visible, infrared) measurements)
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42.50.-p
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(Quantum optics)
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