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High open voltage and superior light-harvesting dye-sensitized solar cells fabricated by flower-like hierarchical TiO2 composed with highly crystalline nanosheets
Que, Ya-Ping1; Weng, Jian1; Hu, Lin-Hua1; Wu, Ji-Huai2; Dai, Song-Yuan1,3
2016-03-01
Source PublicationJOURNAL OF POWER SOURCES
AbstractThe morphology, microstructure and crystallography of titanium dioxide (TiO2) have great effect on the photoelectric performance of dye-sensitized solar cells (DSSCs). Herein, flower-like 3D TiO2 microstructures based on well-defined high-crystalline nanosheets are synthesized through a facile hydro thermal method. Especially, morphological evolution process and mechanism of this hierarchical structure are investigated. Due to the highly crystalline nature and smaller surface area of these nano sheets, the corresponding device shows an extremely high open-current voltage up to 0.84 V, which results from the less electron recombination. When applied as a scattering layer on top of the nano particle layer, the power conversion efficiency (PCE) can be significantly improved and give birth to a PCE value of 9.6%, which is 24.6% higher than that of an analogous device using nanoparticles (NP) (7.7%). As reflected by diffusion reflection spectra, intensity of the modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) and electrochemical impedance spectra (EIS), this hierarchical structure can not only enhance light harvesting, but also reduce electron recombination, facilitate electron transport and improve electron collection efficiency. (C) 2015 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordHierarchical Structure High-crystalline Titanium Dioxide Nanosheet Morphological Evolution Process Growth Mechanism Dye-sensitized Solar Cell
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.jpowsour.2015.12.061
WOS KeywordEXPOSED 001 FACETS ; CONVERSION EFFICIENCY ; COUNTER ELECTRODE ; ANATASE ; PERFORMANCE ; SCATTERING ; SPHERES ; 10-PERCENT ; PARTICLES ; LAYER
Indexed BySCI
Language英语
Funding OrganizationNational Natural Science Foundation of China(21173228 ; National Natural Science Foundation of China(21173228 ; National Natural Science Foundation of China(21173228 ; National Natural Science Foundation of China(21173228 ; 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) ; U1205112 ; U1205112 ; U1205112 ; U1205112 ; 21173227) ; 21173227) ; 21173227) ; 21173227)
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000370884000019
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/22314
Collection应用技术研究所
Affiliation1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Anhui, Peoples R China
2.Huaqiao Univ, Inst Mat Phys Chem, Quanzhou 362021, 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
Que, Ya-Ping,Weng, Jian,Hu, Lin-Hua,et al. High open voltage and superior light-harvesting dye-sensitized solar cells fabricated by flower-like hierarchical TiO2 composed with highly crystalline nanosheets[J]. JOURNAL OF POWER SOURCES,2016,307(无):138-145.
APA Que, Ya-Ping,Weng, Jian,Hu, Lin-Hua,Wu, Ji-Huai,&Dai, Song-Yuan.(2016).High open voltage and superior light-harvesting dye-sensitized solar cells fabricated by flower-like hierarchical TiO2 composed with highly crystalline nanosheets.JOURNAL OF POWER SOURCES,307(无),138-145.
MLA Que, Ya-Ping,et al."High open voltage and superior light-harvesting dye-sensitized solar cells fabricated by flower-like hierarchical TiO2 composed with highly crystalline nanosheets".JOURNAL OF POWER SOURCES 307.无(2016):138-145.
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