| 具有表面修饰的SnO2纳米微晶的光学性质研究 |
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| 引用本文： | 余保龙,顾玉宗,毛艳丽,黄亚彬,符瑞生,朱从善,干福熹.具有表面修饰的SnO2纳米微晶的光学性质研究[J].光学学报,2000,20(11):575-1579. |
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| 作者姓名： | 余保龙 顾玉宗 毛艳丽 黄亚彬 符瑞生 朱从善 干福熹 |
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| 作者单位： | 1. 河南大学物理系,开封,475001
2. 中国科学院上海光学精密机械研究所,上海,201800 |
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| 基金项目： | 河南省杰出青年科学基金!( 980 7)，河南省自然科学基金!( 984 0 5)，国家自然科学基金!( 59572 0 18)资助项目 |
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| 摘 要： | 给出了裸的及包裹ＳｎＯ２纳米微晶的吸收、荧光和激发谱的实验结果。发现随着粒子尺寸的减小，包覆一层有机分子的ＳｎＯ２纳米微晶的吸收谱带边向长波方向发生位移，这与裸ＳｎＯ２纳米微晶的结果是不一致。表明纳米晶体的尺寸及其表面状态对它们的光谱性质有很大影响。从量子限域效应和介电限域效应两个方面对实验结果进行了讨论。
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| 关 键 词： | 表面修饰 纳米微晶 二氧化硅 光学性能 |
| 收稿时间： | 1999/2/26 |
Optical Properties of SnO2 Nanocrystals with Surface Modification |
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| Yu Baolong,Gu Yuzong,Mao Yanli,Huang Yabin,Fu Ruisheng,Zhu Congshan,Gan Fuxi.Optical Properties of SnO2 Nanocrystals with Surface Modification[J].Acta Optica Sinica,2000,20(11):575-1579. |
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| Authors: | Yu Baolong Gu Yuzong Mao Yanli Huang Yabin Fu Ruisheng Zhu Congshan Gan Fuxi |
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| Abstract: | The experimental results of absorption, luminescence and excitation spectra in both bare and coated SnO 2 Nanocrystals are presented It is found that the absorption edge shifts to the longer wavelength as the particle size decreases when the SnO 2 nanocrystals are coated by a layer of organic moleculae, which is inconsistent with that of the bare SnO 2 nanocrystals It is demonstrated that the size and surface situations of nanocrystals greatly affect their spectroscopic properties The experimental data are discussed in terms of the quantum confinement effects and dielectric confinement effects |
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| Keywords: | surficial dipole SO 2 nanocrystals exciton spectra0 |
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