| Au掺杂对TiO_2薄膜表面态及电荷传输性能的影响 |
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| 引用本文： | 郑家伟,姜玲,丁勇,莫立娥,丁有才,胡林华,戴松元.Au掺杂对TiO_2薄膜表面态及电荷传输性能的影响[J].高等学校化学学报,2017,38(11). |
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| 作者姓名： | 郑家伟 姜玲 丁勇 莫立娥 丁有才 胡林华 戴松元 |
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| 作者单位： | 1. 中国科学院合肥物质科学研究院应用技术研究所,中国科学院光伏与节能材料重点实验室,合肥230088;中国科学技术大学研究生院科学岛分院,合肥230026;2. 中国科学院合肥物质科学研究院应用技术研究所,中国科学院光伏与节能材料重点实验室,合肥230088;3. 中国科学院合肥物质科学研究院应用技术研究所,中国科学院光伏与节能材料重点实验室,合肥230088;华北电力大学新型薄膜太阳电池北京市重点实验室,北京102206 |
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| 基金项目： | 国家高技术研究发展计划项目，中国科学院国际合作局对外合作重点项目，国家自然科学基金，安徽省自然科学基金(批准号:1508085SMF224)资助.Supported by the National High Technology Research and Development Program of China，the External Cooperation Program of BIC;Chinese Academy of Sciences，the National Natural Science Foundation of China，the Natural Science Foundation of Anhui Province |
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| 摘 要： | 采用两步法合成了不同Au掺杂量的TiO_2薄膜材料,并通过循环伏安(CV)和电化学阻抗谱(EIS)探究了不同Au掺杂量TiO_2薄膜的表面态数量及其在禁带中的分布情况.借助强度调制光电流/电压谱(IMPS/IMVS)研究了薄膜内电子传输时间和寿命及界面电荷转移性能等.结果表明,适量Au(摩尔分数0.2%)的掺入可有效降低薄膜的表面态数量,优化表面态分布情况,提高电子在TiO_2/染料/电解质界面的电阻,从而改善电子的传输性能,提升太阳电池的光电转换效率.
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| 关 键 词： | 表面态 金掺杂 二氧化钛薄膜 电荷传输 太阳电池 |
Influence of Au Doping on the Surface States and Charge Transport in TiO2 Films |
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| ZHENG Jiawei,JIANG Ling,DING Yong,MO Lie,DING Youcai,HU Linhua,DAI Songyuan.Influence of Au Doping on the Surface States and Charge Transport in TiO2 Films[J].Chemical Research In Chinese Universities,2017,38(11). |
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| Authors: | ZHENG Jiawei JIANG Ling DING Yong MO Lie DING Youcai HU Linhua DAI Songyuan |
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| Abstract: | Nanoblocky TiO2 with different contents of Au doping was synthesized by two-step method. Cyclic voltammetry and electrochemical impedance spectroscopy were used to investigate the influence of Au doping on the number and distribution of surface states in the films. Meanwhile, intensity-modulated photocurrent/photovoltage spectroscopy was used to study the electron transfer and recombination process. The results show that Au doping can effectively reduce the surface states in TiO2 films and optimize the energy distribution. Furthermore, in-depth characterizations indicate that Au doping ( molar fraction, 0. 2%) can increase the charge transfer resistance at the interfaces of dyed-TiO2/electrolyte. Overall, the cell performance was relatively dependent on the effect of surface states essentially. |
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| Keywords: | Surface state Au Doping TiO2 Film Charge transport Solar cell |
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