Near-infrared Quantum Cutting through Down-conversion in Y3Al5O12: RE3+ , Yb3+ ( RE =Tb, Tm, Pr) Nanophosphors

摘要：

We have demonstrated efficient near-infrared quantum cutting in Y3A15O12: Tb, Yb, Y3A15O12: Tm, Yb, and Y3A15O12: Pr, Yb nanophosphors, which involves the conversion of the visible photon from Tb3 + , Tm3 + or Pr3 + into the near-infrared of Yb3 + emission with the optimal quantum efficiency approaching 200％. The dependence of the Yb3 + doping-concentration on the near-infrared quantum cutting and transfer efficiencies has been investigated. A possible mechanism of the near-infrared quantum cutting phenomenon has been proposed based on the measured luminescence spectra and decay lifetimes. The results demonstrate the potential prospect towards the development of Tb3 + - Yb3 + , Tm3 + - Yb3 + and Pr3 + - Yb3 + dual ions based quantum cutting nanophosphors in order to realize high efficiency silicon-based solar cells.

关键词： Downconversion Quantum Cutting Rare-earth Ions Solar Cells

作者: Q. Y. Zhang C. H. Yang Y. X. Pan Z. H. Jiang

作者单位: Key Lab of Specially Functional Materials of Ministry of Education and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641 , China

会议类型: 国际会议

会议名称: 2007亚洲显示国际会议（AD07）

会议地点: 上海

会议语种:英文

页码: 1032-1036

在线出版日期: 2007-03-12（万方平台首次上网日期，不代表论文的发表时间）