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Electrical and photophysical analyses on the impacts of arylamine electron donors in cyclopentadithiophene dye-sensitized solar cells
Xu, Mingfei1,2; Zhou, Difei1,2; Cai, Ning1,2; Liu, Jingyuan1; Li, Renzhi1; Wang, Peng1
2011-11-01
Source PublicationENERGY & ENVIRONMENTAL SCIENCE
ISSN1754-5692
Volume4Issue:11Pages:4735-4742
AbstractThe electron donor of a D-pi-A dye is known for its capability to tune both the electronic trait and packing mode of dye molecules chemisorbed on titania nanocrystals of dye-sensitized solar cells (DSCs), bringing on the opportunity to impact cell performance by modulating the physicochemical characteristics at the titania/dye/electrolyte interface. In this paper, we scrutinize the influences of arylamine electron donors on the optoelectronic features of thin-film DSCs employing a tris(1,10-phenanthroline) cobalt(II/III) redox electrolyte, by use of four cyclopentadithiophene dyes (C218, C244, C245 and C246) with the respective dihexyloxy-, diphenothiazinyl- or di-tert-butylphenyl-substituted triphenylamine and N-hexyl-carbazole electron donors. Amongst these electron donors, dihexyloxy-substituted triphenylamine is found to present the strongest electron-donating capacity, endowing the corresponding C218 dye with evidently red-shifted light absorption in comparison with the other three congeners. Transient absorption measurements show that all DSCs exhibit expeditious dye regeneration, guaranteeing efficient long-distance charge separation at the titania/dye/redox couple interface. Furthermore, it is worthwhile noting that the C218 dye prompts the highest open-circuit photovoltage amongst these chromophores, which is primarily attributed to the positive effect of slow cobalt(III) interception of titania electrons, highlighting the superiority of applying dihexyloxy-substituted triphenylamine as the electron donor for a cyclopentadithiophene dye.
DOI10.1039/c1ee02432a
Indexed BySCI
Language英语
WOS IDWOS:000296248100040
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72266
Collection中国科学院化学研究所
Corresponding AuthorXu, Mingfei
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Xu, Mingfei,Zhou, Difei,Cai, Ning,et al. Electrical and photophysical analyses on the impacts of arylamine electron donors in cyclopentadithiophene dye-sensitized solar cells[J]. ENERGY & ENVIRONMENTAL SCIENCE,2011,4(11):4735-4742.
APA Xu, Mingfei,Zhou, Difei,Cai, Ning,Liu, Jingyuan,Li, Renzhi,&Wang, Peng.(2011).Electrical and photophysical analyses on the impacts of arylamine electron donors in cyclopentadithiophene dye-sensitized solar cells.ENERGY & ENVIRONMENTAL SCIENCE,4(11),4735-4742.
MLA Xu, Mingfei,et al."Electrical and photophysical analyses on the impacts of arylamine electron donors in cyclopentadithiophene dye-sensitized solar cells".ENERGY & ENVIRONMENTAL SCIENCE 4.11(2011):4735-4742.
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