Institutional Repository of Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol，Hefei 230031, Anhui, Peoples R China
| An Investigation of Surface States Energy Distribution and Band Edge Shifts in Solar Cells Based on TiO2 Submicrospheres and Nanoparticles | |
Zheng, Jia-Wei1,2; Mo, Li-E1 ; Chen, Wang-Chao1; Jiang, Ling1; Ding, You-Cai1; Ding, Yong1,3; Li, Zhao-Qian1; Hu, Lin-Hua1; Dai, Song-Yuan1,3
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| 2017-04-01 | |
| 发表期刊 | ELECTROCHIMICA ACTA
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| 摘要 | TiO2 submicrospheres were often used as photoanodes in dye-sensitized solar cells (DSSCs) due to the high internal surface area and great scattering properties. However, surface states in TiO2 submicrospheres limit the electron transport process. In this paper, an investigation of surface states in TiO2 submicrospheres and traditional TiO2 nanoparticles was conducted by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The chemical capacitance, electron transport resistance and recombination resistance were interpreted in a consistent framework. The electron transport and recombination behavior were also studied by open-circuit voltage decay measurements (OCVD) and intensity-modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS). The results show that the TiO2 submicrospheres based films possess a larger number of surface states and a shallow energy distribution than TiO2 nanoparticles under the same film thickness. Furthermore, the fitted data indicate that the electron transport in TiO2 submicrospheres film was faster than in traditional nanoparticles film owing to their high electron concentration and shallow surface states energy distribution. The discussion highlights the location of surface states in the band gap region of TiO2 film, which plays an important role in electron transport and charge recombination in DSSCs. (C) 2017 Elsevier Ltd. All rights reserved. |
| 文章类型 | Article |
| 关键词 | Tio2 Submicrospheres Dye-sensitized Solar Cells (Dsscs) Electrochemical Impedance Spectroscopy (Eis) Electron Transport |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1016/j.electacta.2017.02.121 |
| 关键词[WOS] | ELECTRON-TRANSPORT ; INTERFACIAL TRANSFER ; CHARGE-TRANSPORT ; RECOMBINATION ; EFFICIENCY ; DENSITY ; SEMICONDUCTORS ; MICROSPHERES ; PERFORMANCE ; CONSTANTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National High Technology Research and Development Program of China(2015AA050602) ; National High Technology Research and Development Program of China(2015AA050602) ; National High Technology Research and Development Program of China(2015AA050602) ; National High Technology Research and Development Program of China(2015AA050602) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; National Natural Science Foundation of China(U1205112 ; National Natural Science Foundation of China(U1205112 ; National Natural Science Foundation of China(U1205112 ; National Natural Science Foundation of China(U1205112 ; Natural Science Foundation of Anhui Province(1508085SMF224) ; Natural Science Foundation of Anhui Province(1508085SMF224) ; Natural Science Foundation of Anhui Province(1508085SMF224) ; Natural Science Foundation of Anhui Province(1508085SMF224) ; 51572080 ; 51572080 ; 51572080 ; 51572080 ; 21273242) ; 21273242) ; 21273242) ; 21273242) |
| WOS研究方向 | Electrochemistry |
| WOS类目 | Electrochemistry |
| WOS记录号 | WOS:000398327300006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/32957 |
| 专题 | 应用技术研究所 |
| 作者单位 | 1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Key Lab Novel Thin Film Solar Cells, Hefei 230088, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.North China Elect Power Univ, Beijing Key Lab Novel Thin Film Solar Cells, Beijing 102206, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Jia-Wei,Mo, Li-E,Chen, Wang-Chao,et al. An Investigation of Surface States Energy Distribution and Band Edge Shifts in Solar Cells Based on TiO2 Submicrospheres and Nanoparticles[J]. ELECTROCHIMICA ACTA,2017,232(无):38-43. |
| APA | Zheng, Jia-Wei.,Mo, Li-E.,Chen, Wang-Chao.,Jiang, Ling.,Ding, You-Cai.,...&Dai, Song-Yuan.(2017).An Investigation of Surface States Energy Distribution and Band Edge Shifts in Solar Cells Based on TiO2 Submicrospheres and Nanoparticles.ELECTROCHIMICA ACTA,232(无),38-43. |
| MLA | Zheng, Jia-Wei,et al."An Investigation of Surface States Energy Distribution and Band Edge Shifts in Solar Cells Based on TiO2 Submicrospheres and Nanoparticles".ELECTROCHIMICA ACTA 232.无(2017):38-43. |
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