| 电极表面改性对染料敏化太阳电池性能影响的机理研究 |
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| 引用本文： | 寇东星,刘伟庆,胡林华,黄阳,戴松元,姜年权.电极表面改性对染料敏化太阳电池性能影响的机理研究[J].物理学报,2010,59(8):5857-5862. |
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| 作者姓名： | 寇东星 刘伟庆 胡林华 黄阳 戴松元 姜年权 |
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| 作者单位： | (1)温州大学物理与电子信息工程学院,温州 325035; (2)中国科学院新型薄膜太阳电池重点实验室,合肥 230031 |
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| 基金项目： | 国家重点基础研究发展计划(批准号:2006CB202600),国家高技术研究发展计划(批准号:2009AA050603),中国科学院知识创新工程重要方向项目(批准号:KGCX2-YW-326),温州市科技计划(批准号:G20080046)资助的课题. |
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| 摘 要： | 采用强度调制光电流谱(IMPS)和强度调制光电压谱(IMVS)技术,从染料敏化太阳电池(DSC)电子传输和复合角度对比了不同光强下导电玻璃表面阻挡层及TiO2薄膜优化使电池性能改善的内在原因.阻挡层的引入和TiO2薄膜的优化均通过电沉积法实现.结果表明,对多孔薄膜电极的不同改性均提高了电池的短路电流Jsc和效率η,但对电子传输和复合过程的作用机理有所不同:前者延长了电子寿命τ n,但电子传输时间τ d变化不明显;而后者则主要是延长τ n的同时也缩短了τ d.
关键词：
染料敏化
太阳电池
调制光电流谱/调制光电压谱
电子输运
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| 关 键 词： | 染料敏化 太阳电池 调制光电流谱/调制光电压谱 电子输运 |
| 收稿时间： | 2010-01-12 |
The investigation on the mechanism of enhanced performance of dye-sensitized solar cells after anode modified |
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| Kou Dong-Xing,Liu Wei-Qing,Hu Lin-Hua,Huang Yang,Dai Song-Yuan,Jiang Nian-Quan.The investigation on the mechanism of enhanced performance of dye-sensitized solar cells after anode modified[J].Acta Physica Sinica,2010,59(8):5857-5862. |
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| Authors: | Kou Dong-Xing Liu Wei-Qing Hu Lin-Hua Huang Yang Dai Song-Yuan Jiang Nian-Quan |
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| Institution: | College of physics and electronic information engineering, Wenzhou University, Wenzhou 325035, China;Key Laboratory of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China;Key Laboratory of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China;Key Laboratory of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China;Key Laboratory of Novel Thin Film Solar Cells, Chinese Academy of Sciences, Hefei 230031, China;College of physics and electronic information engineering, Wenzhou University, Wenzhou 325035, China |
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| Abstract: | IMPS(intensity-modulated photocurrent spectroscopy) and IMVS(intensity–modulated photovoltage spectroscopy) measurements are utilized to analyse different mechanisms for enhancing the performance of dye-sensitized solar cells(DSC) based on modified anode. Electron transport and back reaction in DSC are investigated under different illumination intensities. The modifications of anode, blocking layer and modified TiO2films, are performed by electrodeposition. It is found that short-current density Jsc and efficiency η of DSC are improved, but different mechanisms are obtained: the optimization of TCO by coating a blocking layer can effectively extend electron lifetime τ n, but it has little influence on electron transport. On the other hand, the optimization of TiO2 film can enhance electron transport, finally shorten transit time τ d and extend τ n. |
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| Keywords: | dye-sensitized solar cells IMPS/IMVS electron transport |
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