| ZnO纳米颗粒中的表面态发射特性研究 |
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| 引用本文： | 王晓芳,谢平波,赵福利,汪河洲.ZnO纳米颗粒中的表面态发射特性研究[J].光谱学与光谱分析,2009,29(11):2881-2884. |
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| 作者姓名： | 王晓芳 谢平波 赵福利 汪河洲 |
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| 作者单位： | 1. 华南理工大学材料科学与工程学院,广东,广州,510641
2. 中山大学理工学院光电材料与技术国家重点实验室,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金项目，广东省科技计划项目 |
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| 摘 要： | 研究了不同粒径ZnO纳米颗粒样品(17～300nm)的时间光谱,通过对各粒径样品时间积分光谱的谱带结构进行高斯拟合解迭,发现光子能量位于ZnO谱带低能侧的高斯拟合成份Xc3的荧光中心波长随粒径的减小而红移,同时发光带的寿命也随之缩短.基于ZnO谱带低能侧的高斯拟合峰发光带强烈依赖于ZnO样品粒径的谱带特性,提出了与ZnO禁带内的表面态能级有关,同时研究表明,表面态在尺寸降到一定程度的纳米体系中起着重要的作用.
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| 关 键 词： | ZnO纳米颗粒 时间分辨 表面态发射 |
| 收稿时间： | 2008/11/6 |
Surface Emission Characteristics of ZnO Nanoparticles |
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| WANG Xiao-fang,XIE Ping-bo,ZHAO Fu-li,WANG He-zhou. College of Materials Science , Engineering,South China University of Technology,Guangzhou ,China. State Key Laboratory of Optoelectonic Materials , Technologies,School of Physics , Engineering,Sun Yat-sen University,Guangzhou ,China.Surface Emission Characteristics of ZnO Nanoparticles[J].Spectroscopy and Spectral Analysis,2009,29(11):2881-2884. |
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| Authors: | WANG Xiao-fang XIE Ping-bo ZHAO Fu-li WANG He-zhou College of Materials Science Engineering South China University of Technology Guangzhou China State Key Laboratory of Optoelectonic Materials Technologies School of Physics Engineering Sun Yat-sen University Guangzhou China |
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| Institution: | WANG Xiao-fang1,XIE Ping-bo1,ZHAO Fu-li2,WANG He-zhou21. College of Materials Science and Engineering,South China University of Technology,Guangzhou 510641,China2. State Key Laboratory of Optoelectonic Materials and Technologies,School of Physics and Engineering,Sun Yat-sen University,Guangzhou 510275,China |
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| Abstract: | The size-dependence of photoluminescence (PL) of ZnO nanoparticles with diameter from 17 to 300 nm was demonstrated by time resolved laser spectroscopy. Broad PL spectra were obtained and found to consist of three Gaussian components. The authors found that the PL peak position and relative amplitude depend on the size of nanoparticles for the Gaussian PL band inside the energy band-gap. The Gaussian band Xc3 is believed to be associated with the transitions between surface states. It is well known that as ... |
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| Keywords: | ZnO nanoparticles Time resolved Surface emission |
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