| Er3+/Yb3+共掺纳米In2O3的制备及上转换发光 |
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| 引用本文： | 邹少瑜,孟建新. Er3+/Yb3+共掺纳米In2O3的制备及上转换发光[J]. 无机化学学报, 2011, 27(6): 1138-1142 |
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| 作者姓名： | 邹少瑜 孟建新 |
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| 作者单位： | 1. 暨南大学化学系,广州,510632
2. 暨南大学纳米化学研究所,广州,510632 |
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| 基金项目： | 国家自然科学基金，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 用低温溶剂热法以乙二醇为溶剂合成了Er3+和Yb3+共掺的In2O3纳米晶。用X射线衍射(XRD)、透射电镜(TEM)、漫反射光谱和上转换发光光谱对样品进行了分析。XRD和TEM结果表明,产物为纯的立方相In2O3结构,粒径约为30 nm;漫反射光谱显示了In2O3∶Er3+,Yb3+纳米晶在522、653和975 nm附近有3个吸收带;在980 nm近红外光激发下,样品发射出中心波长为525及555 nm的绿光和662 nm的红光,分别对应于Er3+的2H11/2→4I15/2、4S3/2→4I15/2和4F9/2→4I15/2跃迁;研究了Er3+和Yb3+离子的不同掺杂浓度对发光强度的影响,确定了Yb3+和Er3+离子的最佳掺杂浓度均为3%;双对数曲线显示绿光和红光的发射过程均为双光子吸收过程,对样品的上转换发光机制进行了初步讨论。
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| 关 键 词： | 溶剂热法 上转换 纳米晶 In2O3∶Er3+,Yb3+ |
Synthesis and Upconversion Luminescence of Er3+/Yb3+ Co-doped In2O3 Nanocrystals |
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| ZOU Shao-Yu and MENG Jian-Xin. Synthesis and Upconversion Luminescence of Er3+/Yb3+ Co-doped In2O3 Nanocrystals[J]. Chinese Journal of Inorganic Chemistry, 2011, 27(6): 1138-1142 |
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| Authors: | ZOU Shao-Yu and MENG Jian-Xin |
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| Affiliation: | Chemistry Department, Jinan University, Guangzhou 510632, China and Insititute of Nano-Chemistry, Jinan University, Guangzhou 510632, China |
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| Abstract: | Nanocrystals of up-conversion phosphor Er3+ and Yb3+ co-doped In2O3 were prepared by solvent thermal method using glycol as solvent.The samples were characterized by X-ray diffraction,transmission electron microscopy,diffuse reflectance spectra,and upconversion luminescence spectra.X-ray diffraction analysis showed that the products were pure cubic phase,while transmission electron microscopy measurements confirmed the particles size was about 30nm.The diffuse reflectance spectra indicated that Er3+/Yb3+ co... |
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| Keywords: | In2O3:Er3+ Yb3+ |
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