Surface states in TiO2 submicrosphere films and their effect on electron transport

doi:10.1007/s12274-017-1577-4

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	Surface states in TiO2 submicrosphere films and their effect on electron transport
	Zheng, Jiawei 1,2; Mo, Li'e 1; Chen, Wangchao1 ; Jiang, Ling 1; Ding, Yong 1,3; Li, Zhaoqian1 ; Hu, Linhua1 ; Dai, Songyuan 1,3
	2017-11-01
发表期刊	NANO RESEARCH
摘要	Owing to their special three-dimensional network structure and high specific surface area, TiO2 submicrospheres have been widely used as electron conductors in photoanodes for solar cells. In recent years, utilization of TiO2 submicrospheres in solar cells has greatly boosted the photovoltaic performance. Inevitably, however, numerous surface states in the TiO2 network affect electron transport. In this work, the surface states in TiO2 submicrospheres were thoroughly investigated by charge extraction methods, and the results were confirmed by the cyclic voltammetry method. The results showed that ammonia can effectively reduce the number of surface states in TiO2 submicrospheres. Furthermore, in-depth characterizations indicate that ammonia shifts the conduction band toward a more positive potential and improves the interfacial charge transfer. Moreover, charge recombination is effectively prevented. Overall, the cell performance is essentially dependent on the effect of the surface states, which affects the electron transfer and recombination process.
文章类型	Article
关键词	Surface States Tio2 Submicrospheres Solar Cells Charge Extraction Methods Cyclic Voltammetry
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1007/s12274-017-1577-4
关键词[WOS]	SENSITIZED SOLAR-CELLS ; BAND-EDGE MOVEMENT ; HIGH-PERFORMANCE ; CHARGE-TRANSPORT ; INTERFACIAL TRANSFER ; RECOMBINATION ; MICROSPHERES ; EFFICIENCY ; SEMICONDUCTORS ; CONVERSION
收录类别	SCI
语种	英语
项目资助者	National High-tech R&D Program of China(2015AA050602) ; National High-tech R&D Program of China(2015AA050602) ; National High-tech R&D Program of China(2015AA050602) ; National High-tech R&D 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	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000413100400006
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/33821
专题	应用技术研究所
作者单位	1.Chinese Acad Sci, Key Lab Novel Thin Film Solar Cells, Inst Appl Technol, Hefei Inst Phys Sci, Hefei 230088, Anhui, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Anhui, 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, Jiawei,Mo, Li'e,Chen, Wangchao,et al. Surface states in TiO2 submicrosphere films and their effect on electron transport[J]. NANO RESEARCH,2017,10(11):3671-3679.
APA	Zheng, Jiawei.,Mo, Li'e.,Chen, Wangchao.,Jiang, Ling.,Ding, Yong.,...&Dai, Songyuan.(2017).Surface states in TiO2 submicrosphere films and their effect on electron transport.NANO RESEARCH,10(11),3671-3679.
MLA	Zheng, Jiawei,et al."Surface states in TiO2 submicrosphere films and their effect on electron transport".NANO RESEARCH 10.11(2017):3671-3679.

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