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An Investigation of Surface States Energy Distribution and Band Edge Shifts in Solar Cells Based on TiO2 Submicrospheres and Nanoparticles

文献类型：期刊论文

作者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
刊名ELECTROCHIMICA ACTA
出版日期2017-04-01
卷号232期号:无页码:38-43
关键词Tio2 Submicrospheres Dye-sensitized Solar Cells (Dsscs) Electrochemical Impedance Spectroscopy (Eis) Electron Transport
DOI10.1016/j.electacta.2017.02.121
文献子类Article
英文摘要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.
WOS关键词ELECTRON-TRANSPORT ; INTERFACIAL TRANSFER ; CHARGE-TRANSPORT ; RECOMBINATION ; EFFICIENCY ; DENSITY ; SEMICONDUCTORS ; MICROSPHERES ; PERFORMANCE ; CONSTANTS
WOS研究方向Electrochemistry
语种英语
WOS记录号WOS:000398327300006
资助机构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) ; 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)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/32957]  
专题合肥物质科学研究院_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.

入库方式： OAI收割

来源：合肥物质科学研究院

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