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Surface states in TiO2 submicrosphere films and their effect on electron transport
Zheng, Jiawei1,2; Mo, Li'e1; Chen, Wangchao1; Jiang, Ling1; Ding, Yong1,3; Li, Zhaoqian1; Hu, Linhua1; Dai, Songyuan1,3
2017-11-01
Source PublicationNANO RESEARCH
Volume10Issue:11Pages:3671-3679
AbstractOwing 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.
SubtypeArticle
KeywordSurface States Tio2 Submicrospheres Solar Cells Charge Extraction Methods Cyclic Voltammetry
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding OrganizationNational High-tech R&D Program of China(2015AA050602) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; National Natural Science Foundation of China(U1205112 ; Natural Science Foundation of Anhui Province(1508085SMF224) ; 51572080 ; 21273242) ; National High-tech R&D Program of China(2015AA050602) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; National Natural Science Foundation of China(U1205112 ; Natural Science Foundation of Anhui Province(1508085SMF224) ; 51572080 ; 21273242)
DOI10.1007/s12274-017-1577-4
WOS KeywordSENSITIZED SOLAR-CELLS ; BAND-EDGE MOVEMENT ; HIGH-PERFORMANCE ; CHARGE-TRANSPORT ; INTERFACIAL TRANSFER ; RECOMBINATION ; MICROSPHERES ; EFFICIENCY ; SEMICONDUCTORS ; CONVERSION
Indexed BySCI
Language英语
Funding OrganizationNational High-tech R&D Program of China(2015AA050602) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; National Natural Science Foundation of China(U1205112 ; Natural Science Foundation of Anhui Province(1508085SMF224) ; 51572080 ; 21273242) ; National High-tech R&D Program of China(2015AA050602) ; External Cooperation Program of BIC, Chinese Academy of Sciences(GJHZ1607) ; National Natural Science Foundation of China(U1205112 ; Natural Science Foundation of Anhui Province(1508085SMF224) ; 51572080 ; 21273242)
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000413100400006
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33821
Collection应用技术研究所
Affiliation1.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
Recommended Citation
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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