| Investigation of the mechanism of upconversion luminescence in Er3＋/Yb3＋ co-doped Bi2Ti2O7 inverse opal |
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| 作者姓名： | 严冬 杨正文 廖佳燕 吴航俊 邱建备 宋志国 周大成 杨勇 尹兆益 |
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| 作者单位： | Key Laboratory of Advanced Materials in Rare and Precious and Non-ferrous Metals, Ministry of Education, Key Laboratory of Advanced Materials of Yunnan Province, College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| 基金项目： | supported by the National Natural Science Foundation of China(No.61205181);Zhejiang Provincial Natural Science Foundation of China(No.LQ12E02003);the Natural Science Foundation of Ningbo City(No.2012A610122);the Scientific Research Fund of Zhejiang Provincial Education Department(No.Y201120457);K.C.Wong Magna Fund in Ningbo University |
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| 摘 要： | ![]()
Bismuth (Bi)-doped materials have attracted a great deal of attention because of their broadband nearinfrared (near-IR) emission around the wavelength utilized in telecommunications. In this study, broad near-IR emission band from 1 100 to 1 650 nm is generated in the Bi-doped 90GeS2-10Ga2S3 glass and glass-ceramics under 820 nm of light excitation. Based on the analysis of the absorption and emission spectra, the origin of this broadband emission is ascribed to the Bi2-2 dimers. The precipitation of β-GeS2 nanocrystals drastically enhances the emission intensity and lifetime of Bi-doped chalcogenide glass.
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| 关 键 词： | 反蛋白石 发光机制 共掺 上转换 双光子过程 三维有序 发射特性 样品准备 |
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