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| A three-dimensional conducting oxide hollow nanobead photoanode: synthesis, characterization, and applications in dye-sensitized solar cells | |
| Liu, Fa-Qian1; Su, Juan1; Wang, Wei1; Li, Wei-Hua2,3; Hu, Hai-Qing1; Wang, Lei1; Li, Rong-Xun1 | |
| 2015 | |
| 发表期刊 | JOURNAL OF MATERIALS CHEMISTRY A
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| 卷号 | 3期号:6页码:3136-3143 |
| 文章类型 | Article |
| 摘要 | It was reported that liquid-electrolyte-based dye-sensitized solar cells (DSSCs) are "majority carrier" devices where the internal electric field is screened off; accordingly, the electrons travel through the TiO2 nanoparticles by diffusion rather than drift, resulting in "sticky" electrons which undergo frequent trapping and detrapping. We report here the drift transport observed in I-/I-3(-) electrolyte-based DSSCs by using a 3-dimensional (3-D) transparent conducting oxide (TCO) such as fluorinated tin oxide (FTO) coated with TiO2 as the photoanode. By re-allocating the charge transport process, the thin TiO2 layer (20-30 nm) covering the entire TCO scaffold leads to a striking reduction in charge transport distance by a factor of 10(2) to 10(3). Electrochemical impedance spectroscopy (EIS) study indicates that it is viable to establish a potential gradient in the 3-D TCO scaffold; thus, the electron transport in this 3-D TCO structure exhibits field-driven drift behaviour, which is verified by the linear dependence of electron lifetime on the photovoltage, along with the virtual independence of electron transport resistance with respect to the bias voltage in spite of the use of the liquid I-/I-3(-) electrolyte. |
| DOI | 10.1039/c4ta06324d |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000348990500079 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/25386 |
| 专题 | 海洋环境腐蚀与生物污损重点实验室 |
| 作者单位 | 1.Qingdao Univ Sci & Technol, Engn Res Ctr High Performance Polymer & Molding T, Minist Educ, Qingdao 266042, Peoples R China 2.Qingdao Technol Univ, Cooperat Innovat Ctr Engn Construct & Safety Shan, Qingdao 266033, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Fa-Qian,Su, Juan,Wang, Wei,et al. A three-dimensional conducting oxide hollow nanobead photoanode: synthesis, characterization, and applications in dye-sensitized solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(6):3136-3143. |
| APA | Liu, Fa-Qian.,Su, Juan.,Wang, Wei.,Li, Wei-Hua.,Hu, Hai-Qing.,...&Li, Rong-Xun.(2015).A three-dimensional conducting oxide hollow nanobead photoanode: synthesis, characterization, and applications in dye-sensitized solar cells.JOURNAL OF MATERIALS CHEMISTRY A,3(6),3136-3143. |
| MLA | Liu, Fa-Qian,et al."A three-dimensional conducting oxide hollow nanobead photoanode: synthesis, characterization, and applications in dye-sensitized solar cells".JOURNAL OF MATERIALS CHEMISTRY A 3.6(2015):3136-3143. |
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| A three-dimensional （1516KB） | 期刊论文 | 出版稿 | 限制开放 | ODC PDDL | 浏览 | |
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