| ZnO纳米粒子结构对光电量子限域特性的影响 |
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| 引用本文： | 林艳红,王德军,肇启东,杨敏,张清林.ZnO纳米粒子结构对光电量子限域特性的影响[J].高等学校化学学报,2003,24(11):2077-2079. |
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| 作者姓名： | 林艳红 王德军 肇启东 杨敏 张清林 |
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| 作者单位： | 吉林大学化学学院,长春,130023 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 0 2 73 0 2 7)，教育部博士学科点基金 (批准号 :0 2 0 183 0 0 8)，吉林大学纳米材料专项基金资助 |
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| 摘 要： | Zn O作为一种宽禁带 (3 .3 6e V)高激子结合能 (60 me V)的半导体材料已引起人们的关注 .Zn O纳米粒子的比表面积较大 ,表面活性较高 ,对周围环境敏感 ,使其成为传感器制作中最有前途的材料1] ,还在太阳能转换2 ] 、发光材料3] 、半导体表面修饰与敏化4 ] 、纳米电子学以及分子电子学器件5] 等领域显示出广阔的应用前景 .制约这些应用的关键是 Zn O纳米粒子表面和界面的电子结构和电荷转移行为 ,但有关此方面的报道较少 .本文用溶胶 -凝胶法制备了不同粒径的 Zn O纳米粒子 ,应用表面光电压谱 (SPS)和场诱导表面光电压谱 (FISPS…
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| 关 键 词： | ZnO 纳米粒子 结构 光电量子限域 激子态 场诱导表面光电压谱 半导体材料 氧化锌 |
| 文章编号： | 0251-0790(2003)11-2077-03 |
Effect of ZnO Nanoparticle Structure on Photo-electric Quantum Confinement Properties of Photogenerated Charges |
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| LIN Yan-Hong,WANG De-Jun ,ZHAO Qi-Dong,YANG Min,ZHANG Qing-Lin.Effect of ZnO Nanoparticle Structure on Photo-electric Quantum Confinement Properties of Photogenerated Charges[J].Chemical Research In Chinese Universities,2003,24(11):2077-2079. |
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| Authors: | LIN Yan-Hong WANG De-Jun ZHAO Qi-Dong YANG Min ZHANG Qing-Lin |
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| Institution: | LIN Yan-Hong,WANG De-Jun *,ZHAO Qi-Dong,YANG Min,ZHANG Qing-Lin |
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| Abstract: | The ZnO quantum dot particles with an average particle size 3 nm and the ZnO nanorods with an average length of 80 nm and width about 14 nm were synthesized by the sol-gel method. The surface photovoltaic properties of ZnO nanoparticles were investigated by means of FISPS technique and the bands in FISPS were identified. The results show that the surface photovoltaic properties of ZnO nanoparticles make a great difference for the structures or sizes due to the quantum confinement effect. The photovoltaic response intensity of ZnO nanorods is two-orders of magnitude stronger than that of quantum dot particles. And it is found that the ZnO quantum dot particles exhibit significant quantum confinement properties of photogenerated charges. The photovoltaic response bands of ZnO nanorods are related to band-band transition and bound exciton transition, respectively. |
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| Keywords: | ZnO nanoparticles Quantum confinement Field induced surface photovoltage spectra(FISPS) Excition state |
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