| TiCl4处理多孔薄膜对染料敏化太阳电池中电子传输特性影响研究 |
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| 引用本文： | 奚小网,胡林华,徐炜炜,戴松元.TiCl4处理多孔薄膜对染料敏化太阳电池中电子传输特性影响研究[J].物理学报,2011,60(11):118203-118203. |
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| 作者姓名： | 奚小网 胡林华 徐炜炜 戴松元 |
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| 作者单位： | 1. 中国科学院等离子体物理研究所,中国科学院新型薄膜太阳电池重点实验室,合肥 230031;
2. 无锡职业技术学院机电技术学院,无锡 214121;
3. 南通大学江苏省专用集成电路设计重点实验室,南通 226019 |
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| 基金项目： | 国家重点基础研究发展计划(批准号:2011CBA00700)、国家高技术研究发展计划(批准号:2009AA050603)和中国科学院知识创新工程重要方向(批准号:KGCX2-YW-326)资助的课题. |
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| 摘 要： | 借助于强度调制光电流谱(IMPS)和强度调制光电压谱(IMVS)技术,研究了纳米TiO2多孔薄膜在TiCl4溶液处理后组装成的染料敏化太阳电池(DSC)中电子传输和背反应动力学特性. 研究表明:纳米TiO2多孔薄膜经TiCl4溶液处理后,电池中暗电流减小,电子寿命τn明显延长,电子传输时间τd缩短,电子有效扩散系数Dn增大,电子扩散长度Ln值升高,入射单色光子/电子转化效率ηIPCE增加,光生电荷量Qoc显著增加. 文章从微观层面上研究了TiCl4溶液处理纳米TiO2多孔薄膜对DSC内部电子的产生、传输和复合过程的影响,从而很好地解释了电池光伏性能随TiCl4溶液处理的变化关系.
关键词：
4')" href="#">TiCl4
电子传输
染料敏化
太阳电池
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| 关 键 词： | TiCl4 电子传输 染料敏化 太阳电池 |
| 收稿时间： | 2011-01-16 |
Influence of TiCl4 nanoporous TiO2 films on the performance of dye-sensitized solar cells |
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| Xi Xiao-Wang,Hu Lin-Hu,Xu Wei-Wei and Dai Song-Yuan.Influence of TiCl4 nanoporous TiO2 films on the performance of dye-sensitized solar cells[J].Acta Physica Sinica,2011,60(11):118203-118203. |
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| Authors: | Xi Xiao-Wang Hu Lin-Hu Xu Wei-Wei and Dai Song-Yuan |
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| Institution: | Department of Material Science and Applied Chemistry, National University of Defence Technology, Changsha 410073, China;Department of Material Science and Applied Chemistry, National University of Defence Technology, Changsha 410073, China;Department of Material Science and Applied Chemistry, National University of Defence Technology, Changsha 410073, China;Key Laboratory of New Ceramic Fibers and Composites, National University of Defence Technology, Changsha 410073, China |
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| Abstract: | The mechanisms of electron transport and back-reaction in dye-sensitized solar cells (DSCSs) are investigated by intensity-modulated photocurrent spectroscopy (IMPS) and intensity-modulated photovoltage spectroscopy (IMVS). The DSCSs with and without TiCl4-treated nanoporous TiO2 films are measured by IMPS/IMVS. The results indicate that the electron lifetime (τn), the diffusion coefficient (Dn), the diffusion length (Ln), the incident photon to current efficiency (IPCE) and the photoinduced charge (Qoc) increase markedly, while the dark current and the electron transit time (τd) decreases for the TiCl4-treated nanoporous TiO2 films. The influence of TiCl4-treatment of nanoporous TiO2 film on the electron generation, the transport and the recombination processes is investigated at a microscopic level. |
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| Keywords: | silicon oxycarbide anode material lithium ion battery |
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