Synthesis and Up-Conversion Luminescence of Er3+-Doped Al2O3 Coatings

被引：0
作者：
Wang, Jun [1 ]
Mao, Xinguang [1 ]
Shen, Jie [1 ]
机构：
[1] Department of Materials Science, Fudan University, Shanghai
来源：
Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology | 2015年 / 35卷 / 06期
关键词：
Er[!sup]3+[!/sup]-doped Al[!sub]2[!/sub]O[!sub]3[!/sub] thin film; Magnetron sputtering; Nonradiative transition; Up-conversion;
D O I：
10.13922/j.cnki.cjovst.2015.06.10
中图分类号：
学科分类号：
摘要：
The Er3+-doped Al2O3 coatings were deposited by magnetron sputtering to enhance the conversion efficiency of solar energy. The influence of the Er3+ content on the up-conversion luminescence was investigated with X-ray diffraction and fluorescence spectroscopy (FL). The results show that depen ding on Er3+ content, the Al2O3 coatings, consisting of θ- (Al, Er)2O3, Al10Er6O24 and ErAlO3, are capable of converting infrared (IR) light to red and green lights. For example, irradiated at 980 nm of laser, 490 nm green-peak and 670 nm red-peak were observed for the 500 nm thick coatings, corresponding to Er3+, s 4F7/2 →4I5/2 and 4F9/2→ 4I15/2 transitions, respectively. The strongest intensity was observed at 0.6 mol% of Er3+ due to co-rela tion of Al10Er6O24 and ErAlO3. The Er3+ content has a stronger impact on the red emission than on the green emission because the phonon state density in Er3+-doped Al2O3 coating is lower than that in Er3+-doped Al2O3 powder, resulting in suppression of the Er3+, snon-radiative transition and for mation of 490 nm peak. ©, 2015, Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology. All right reserved.
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页码：696 / 702
页数：6
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