Joint electrical, photophysical and computational studies on D-pi-A dye sensitized solar cells: the impacts of dithiophene rigidification

	Joint electrical, photophysical and computational studies on D-pi-A dye sensitized solar cells: the impacts of dithiophene rigidification
	Xu MF ; Zhang M ; Pastore M ; Li RZ ; De Angelis F ; Wang P
刊名	chemical science
	2012
卷号	3 期号:4 页码:976-983
关键词	ORGANIC-DYES CHARGE RECOMBINATION HIGHLY EFFICIENT BAND-GAP PERFORMANCE TIO2 CHROMOPHORES MOLECULES DESIGN MOIETY
ISSN号	2041-6520
通讯作者	li rz
中文摘要	the rigidification of pi-conjugated segments represents a feasible tactic towards energy-level engineering of organic d-pi-a dyes in mesoscopic titania solar cells. in this work, comparions of four dyes with the di(3-hexylthiophene), dihexyldithienosilole, dihexylcyclopentadithiophene and n-hexyldithienopyrrole linkers have revealed some general influences of pi-linker rigidification on the optoelectronic features of titania solar cells employing a cobalt(ii/iii) redox electrolyte, in terms of energetic and kinetic viewpoints. compared to a dye with the di(3-hexylthiophene) linker, its three counterparts with rigidified dithiophene blocks present bathochromic and hyperchromic absorptions of solar photons. transient absorption measurements have shown that the incorporation of si-, c-and n-bridged dithiophene segments decelerates the dye regeneration kinetics. the rigidification of pi-conjugated dithiophene linkers brings forth a general open-circuit photovoltage diminishment, in the range from 60 to 190 mv. further insightful impedance analyses have disclosed that the open-circuit photovoltage reduction, due to the pi-linker alternation from di(3-hexylthiophene) to n-hexyldithienopyrrole, is predominantly caused by an adverse downward displacement of the titania conduction band edge, despite a positive contribution from attenuated charge recombination at the titania/electrolyte interface.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000301122000005
公开日期	2013-06-30
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/48624]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Xu MF,Zhang M,Pastore M,et al. Joint electrical, photophysical and computational studies on D-pi-A dye sensitized solar cells: the impacts of dithiophene rigidification[J]. chemical science,2012,3(4):976-983.
APA	Xu MF,Zhang M,Pastore M,Li RZ,De Angelis F,&Wang P.(2012).Joint electrical, photophysical and computational studies on D-pi-A dye sensitized solar cells: the impacts of dithiophene rigidification.chemical science,3(4),976-983.
MLA	Xu MF,et al."Joint electrical, photophysical and computational studies on D-pi-A dye sensitized solar cells: the impacts of dithiophene rigidification".chemical science 3.4(2012):976-983.