Chin. Phys. Lett.  2008, Vol. 25 Issue (6): 2078-2080    DOI:
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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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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.
Keywords: 42.70.Ce      52.70.Kz      42.50.-p     
Received: 24 January 2008      Published: 31 May 2008
PACS:  42.70.Ce (Glasses, quartz)  
  52.70.Kz (Optical (ultraviolet, visible, infrared) measurements)  
  42.50.-p (Quantum optics)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I6/02078
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CHEN Jing-Xin
YE Song
WANG Xi
QIU Jian-Rong
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