Electrical and photophysical analyses on the impacts of arylamine electron donors in cyclopentadithiophene dye-sensitized solar cells

doi:10.1039/c1ee02432a

CORC > 化学研究所 > 中国科学院化学研究所

	Electrical and photophysical analyses on the impacts of arylamine electron donors in cyclopentadithiophene dye-sensitized solar cells
	Xu, Mingfei 1,2; Zhou, Difei 1,2; Cai, Ning 1,2; Liu, Jingyuan 1; Li, Renzhi 1; Wang, Peng 1
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2011-11-01
卷号	4 期号:11 页码:4735-4742
ISSN号	1754-5692
DOI	10.1039/c1ee02432a
英文摘要	The 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.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000296248100040
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/72265]
专题	中国科学院化学研究所
通讯作者	Xu, Mingfei
作者单位	1.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
推荐引用方式 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.