| Upconversion properties of Y2O3：Er films prepared by sol-gel method |
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| 引用本文： | 乔艳敏,郭海. Upconversion properties of Y2O3：Er films prepared by sol-gel method[J]. 中国稀土学报(英文版), 2009, 27(3): 407-411. DOI: 10.1016/S1002-0721(08)60261-6 |
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| 作者姓名： | 乔艳敏 郭海 |
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| 作者单位： | QIAO Yanmin(Department of Physics. Zhejiang Normal University, Jinhua 321004, China);GUO Hai(Department of Physics. Zhejiang Normal University, Jinhua 321004, China;Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China) |
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| 基金项目： | Foundation item： Project supported by the grants from the Nature Science Foundation of Zhejiang Province （Y406309） and Research Program from Science and Technology Bureau of Jinhua City （2008-1 - 151 ）Acknowledgement： The authors are grateful to Miss. Zheng Jufang, Mr. Xie Guanqun and Mr. Xie Yunlong for the measurement of FT-IR spectra, FE-SEM images and XRD patterns of samples. |
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| 摘 要： |
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| 关 键 词： | 氧化钇 溶胶凝胶法 转换特性 傅立叶变换红外光谱 扫描电子显微镜 上转换效率 上转换机制 薄膜 |
| 收稿时间： | 2008-05-14 |
Upconversion properties of Y2O3:Er films prepared by sol-gel method |
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| QIAO Yanmin,GUO Hai. Upconversion properties of Y2O3:Er films prepared by sol-gel method[J]. Journal of Rare Earths, 2009, 27(3): 407-411. DOI: 10.1016/S1002-0721(08)60261-6 |
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| Authors: | QIAO Yanmin GUO Hai |
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| Affiliation: | [1]Department of Physics, Zhejiang Normal University, Jinhua 321004, China [2]Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physi-cal Chemistry, Zhejiang Normal University, Jinhua 321004, China |
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| Abstract: | Y2O3:Er3+ films were prepared by a simple sol-gel process. The structural properties of Y2O3:Er3+ flints were characterized with X-ray diffraction, Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The results indicated that the Y2O3:Er3+ f'rims might have high upconversion efficiency because of their low vibrational energy. Under 785 and 980 nm laser excitation, the samples showed green (2H11/2→4I15/2, 4S3/2→4I15/2) and red (4F9/2→4I15/2) upconversion emissions. The upconversion mechanisms were stud-led in detail through laser power dependence. Excited state absorption and energy transfer process were discussed as possible upconversion mechanisms. The cross relaxation process in Er3+ was also investigated. |
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| Keywords: | Y2O3:Er3 film sol-gel upconversion rare earths |
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