,Cooperative Quantum Cutting of Nano-Crystalline BaF2:Tb3+, Yb3+ in Oxyfluoride Glass Ceramics

• 作 者: CHEN Jing-Xin YE Song WANG Xi QIU Jian-Rong
• 机 构: State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027
• 出 处: 中国物理快报（英文版）
• 发表日期: 2008年6期

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.