Broadband shifting luminescence in Cr3+/Yb3+ codoped Y3Al5O12 thin films by pulsed laser deposition
1 Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China
2 Institute of Optical Communication Materials and State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China
Abstract
Cr3+/Yb3+ 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 Cr3+ to Yb3+ ions in the Cr3+/Yb3+ codoped YAG thin films; energy transfer efficiency is 71%. The YAG films may have potential application to enhance the efficiency of silicon solar cells.
Yinzhen Wang, Ning Li, Pingping Duan, Junyong Deng, Liaolin Zhang, Benli Chu, Qinyu He. Broadband shifting luminescence in Cr3+/Yb3+ codoped Y3Al5O12 thin films by pulsed laser deposition[J]. Chinese Optics Letters, 2015, 13(6): 060701.
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