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A comparative study of the density of surface states in solid and hollow TiO2 microspheres
Gao, Chun1,2; Peng, Yu-Qi1,2; Hu, Lin-Hua1; Mo, Li-E1; Zhang, Xian-Xi3; Hayat, Tasawar4; Alsaedi, Ahmed4; Dai, Song-Yuan1,5
2018-09-01
Source PublicationINORGANIC CHEMISTRY FRONTIERS
ISSN2052-1553
Corresponding AuthorHu, Lin-Hua(lhhu@rntek.cas.cn) ; Mo, Li-E(lemo@rntek.cas.cn) ; Dai, Song-Yuan(sydai@ncepu.edu.cn)
AbstractAs a crucial photoelectric material, TiO2 microspheres have been widely applied as photoanodes in photovoltaic devices owing to their large surface area, suitable pore size and prominent scattering effect. However, surface states in the TiO2 films playing a significant role in the charge transport process are an important factor influencing the photovoltaic performance. Herein, solid and hollow TiO2 microspheres were compared to investigate the influence of the density and distribution of surface states. The density and distribution of surface states, charge recombination process and band edge shifts were investigated. The results showed that the density of surface states of the TiO2 microspheres decreased after recrystallization, leading to a suppressed charge recombination rate. Moreover, owing to the hollow architecture, recrystallized hollow microspheres (rHM) have higher photon utilization. As a result, a photoelectric conversion efficiency of dye-sensitized solar cells based on the rHM up to 10.57% was obtained.
DOI10.1039/c8qi00633d
WOS KeywordSENSITIZED SOLAR-CELLS ; BAND-EDGE MOVEMENT ; ELECTRON-TRANSPORT ; CHARGE-TRANSPORT ; SCATTERING LAYER ; ANATASE TIO2 ; RECOMBINATION ; EFFICIENCY ; SEMICONDUCTORS ; NANOPARTICLES
Indexed BySCI
Language英语
Funding ProjectNational High Technology Research and Development Program of China[2015AA050602] ; External Cooperation Program of BIC, Chinese Academy of Sciences[GJHZ1607] ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology[2016FXZY003] ; National High Technology Research and Development Program of China[2015AA050602] ; External Cooperation Program of BIC, Chinese Academy of Sciences[GJHZ1607] ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology[2016FXZY003]
Funding OrganizationNational High Technology Research and Development Program of China ; National High Technology Research and Development Program of China ; National High Technology Research and Development Program of China ; National High Technology Research and Development Program of China ; External Cooperation Program of BIC, Chinese Academy of Sciences ; External Cooperation Program of BIC, Chinese Academy of Sciences ; External Cooperation Program of BIC, Chinese Academy of Sciences ; External Cooperation Program of BIC, Chinese Academy of Sciences ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; National High Technology Research and Development Program of China ; National High Technology Research and Development Program of China ; National High Technology Research and Development Program of China ; National High Technology Research and Development Program of China ; External Cooperation Program of BIC, Chinese Academy of Sciences ; External Cooperation Program of BIC, Chinese Academy of Sciences ; External Cooperation Program of BIC, Chinese Academy of Sciences ; External Cooperation Program of BIC, Chinese Academy of Sciences ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear
WOS IDWOS:000445217200025
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/39221
Collection应用技术研究所
Corresponding AuthorHu, Lin-Hua; Mo, Li-E; Dai, Song-Yuan
Affiliation1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
3.Liaocheng Univ, Shandong Prov Collaborat Innovat Ctr Chem Energy, Liaocheng 252000, Peoples R China
4.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Dept Math, Jeddah 21589, Saudi Arabia
5.North China Elect Power Univ, Beijing Key Lab Novel Thin Film Solar Cells, Beijing 102206, Peoples R China
Recommended Citation
GB/T 7714
Gao, Chun,Peng, Yu-Qi,Hu, Lin-Hua,et al. A comparative study of the density of surface states in solid and hollow TiO2 microspheres[J]. INORGANIC CHEMISTRY FRONTIERS,2018,5(9):2284-2290.
APA Gao, Chun.,Peng, Yu-Qi.,Hu, Lin-Hua.,Mo, Li-E.,Zhang, Xian-Xi.,...&Dai, Song-Yuan.(2018).A comparative study of the density of surface states in solid and hollow TiO2 microspheres.INORGANIC CHEMISTRY FRONTIERS,5(9),2284-2290.
MLA Gao, Chun,et al."A comparative study of the density of surface states in solid and hollow TiO2 microspheres".INORGANIC CHEMISTRY FRONTIERS 5.9(2018):2284-2290.
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