| CdS量子点与金电极之间的光生电子交换 |
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| 引用本文： | 岳钊,张维,王程,刘国华,牛文成.CdS量子点与金电极之间的光生电子交换[J].物理化学学报,2011,27(12):2814-2820. |
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| 作者姓名： | 岳钊 张维 王程 刘国华 牛文成 |
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| 作者单位： | Department of Electronics, Nankai University, Tianjin 300071, P. R. China |
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| 基金项目： | 国家自然科学基金，天津市自然科学基金 |
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| 摘 要： | 对光照下CdS量子点与金电极之间的光生电子交换过程进行了系统研究.首先,对基于电子隧穿的多个光生电子转移过程进行了理论分析,并进行了数学模型推导.其次,利用推导的数学模型在不同参数的条件下进行了仿真研究.最后,测量了CdS量子点修饰的金电极在不同偏置电压、不同光强和不同氧化物及还原物浓度的条件下产生的光电流,并将实验、理论及仿真结果三者相结合进行了分析讨论.实验结果与仿真结果都证明了理论模型的正确性.
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| 关 键 词： | 量子点 电子隧穿 光生电子交换 光电流 光电化学 |
| 收稿时间： | 2011-08-12 |
| 修稿时间： | 2011-10-20 |
Photoinduced Electron Transfer between CdS Quantum Dots and Gold Electrodes |
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| YUE Zhao,ZHANG Wei,WANG Cheng,LIU Guo-Hua,NIU Wen-Cheng.Photoinduced Electron Transfer between CdS Quantum Dots and Gold Electrodes[J].Acta Physico-Chimica Sinica,2011,27(12):2814-2820. |
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| Authors: | YUE Zhao ZHANG Wei WANG Cheng LIU Guo-Hua NIU Wen-Cheng |
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| Institution: | Department of Electronics, Nankai University, Tianjin 300071, P. R. China |
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| Abstract: | For a better design of quantum dots(QDs) based photoelectrochemical sensors,photoinduced electron transfer between CdS QDs and gold electrodes was studied.First,a theoretical study and mathematical model are given wherein several electron tunneling processes compete with each other to give a photocurrent under illumination.Second,simulations with different parameters were carried out.Finally,photocurrents from CdS QDs modified gold electrodes with dithiol groups were measured under different conditions.The ... |
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| Keywords: | Quantum dot Electron tunneling Photoinduced electron transfer Photocurrent Photoelectrochemistry |
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