Broadband shifting luminescence in Cr^(3+)/Yb^(3+) codoped Y_3Al_5O_(12) thin films by pulsed laser deposition  

作　　者：王银珍 李宁 段萍萍 邓俊勇 张料林 初本莉 何琴玉 

机构地区：[1]Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University [2]Institute of Optical Communication Materials and State Key Laboratory of Luminescent Materials and Devices,South China University of Technology

出　　处：《Chinese Optics Letters》2015年第6期18-21,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.11474104 and 51372092);the China Postdoctoral Science Foundation(No.2012M511801)

摘　　要：Cr^3＋/yb^3＋ codoped Y3Al5O12 （i.e., YAG） thin films are prepared by pulsed laser deposition. The films are characterized by X-ray diffraction, atomic force microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and photoluminescence spectra. Excitation at 446 or 587 nm, a broadband emission in the range of 610-800 nm, and an intense near-infrared at 1030 nm are obtained, showing cooperative energy transfer from Cr^3＋ to Yb^3＋ ions in the Cr^3＋/Yb^3＋ codoped YAG thin films; energy transfer efficiency is 71%. The YAG films may have potential application to enhance the efficiency of silicon solar cells.Cr^3＋/yb^3＋ codoped Y3Al5O12 （i.e., YAG） thin films are prepared by pulsed laser deposition. The films are characterized by X-ray diffraction, atomic force microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and photoluminescence spectra. Excitation at 446 or 587 nm, a broadband emission in the range of 610-800 nm, and an intense near-infrared at 1030 nm are obtained, showing cooperative energy transfer from Cr^3＋ to Yb^3＋ ions in the Cr^3＋/Yb^3＋ codoped YAG thin films; energy transfer efficiency is 71%. The YAG films may have potential application to enhance the efficiency of silicon solar cells.

关 键 词：YB Broadband shifting luminescence in Cr thin films by pulsed laser deposition codoped Y3Al5O Al 

分 类 号：O484[理学—固体物理]