Photoluminescence properties of Yb3+-doped CaWO4 thin films grown by radio frequency magnetron sputtering

被引：0
|
作者：
Liao, Jin-Sheng [1 ]
Liu, Bao [1 ]
Liu, Shao-Hua [1 ]
Zhong, Lai-Fu [1 ]
Fu, Jun-Xiang [1 ]
机构：
[1] School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2014年 / 35卷 / 10期
关键词：
CaWO[!sub]4[!/sub; Downconversion; Magnetron sputtering; Thin film;
D O I：
10.3788/fgxb20143510.1234
中图分类号：
学科分类号：
摘要：
Yb3+-doped CaWO4 thin films were prepared by radio frequency (RF) magnetron sputtering and the influence of different deposition pressures and time on the structure, surface morphology and optical properties of films were discussed. XRD results confirm that the samples have a tetragonal scheelite structure and the films have a preferential orientation along the (004) direction under different deposition pressures. SEM images show that the surface morphology of the film consists of spherical-like grains and voids. PL spectra indicate that the films emit strong near infrared light centered at 994 nm under 260 nm excitation. The luminescence intensity of Yb3+ trends to irregular with the increasing of sputtering pressure, and firstly increases and then decreases with the increasing of sputtering time. Excellent luminescence properties of CaWO4:Yb3+ thin film might be regarded as a potential luminescence converter layer for enhanced silicon solar cell performance.
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页码：1234 / 1239
页数：5
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