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	Efficient electron injection due to a special adsorbing group's combination of carboxyl and hydroxyl: dye-sensitized solar cells based on new hemicyanine dyes
	Chen, YS; Li, C; Zeng, ZH; Wang, WB; Wang, XS; Zhang, BW
刊名	Journal of materials chemistry
	2005
卷号	15期号:16页码:1654-1661
ISSN号	0959-9428
DOI	10.1039/b418906j
通讯作者	Wang, xs()
英文摘要	A series of new benzothiazolium hemicyanine dyes (hc-1, hc-2, hc-3, hc-4, and hc-5 in scheme 1) were designed and synthesized for sensitization of nanocrystalline tio2 electrodes by introducing carboxyl, hydroxyl, or sulfonate anchoring groups onto the dyes' skeletons. a naphthothiazolium hemicyanine with both sulfonate and hydroxyl (hc-6) was also prepared for comparison. the photophysical and photoelectrochemical studies revealed that three kinds of efficiencies, i.e. the fluorescence quenching efficiencies of the dyes by colloidal tio2, the monochromatic incident photon-to-current conversion efficiencies (ipces) for the dye-sensitized tio2 electrodes, and the overall photoelectric conversion efficiencies (eta) for the dye-sensitized solar cells (dsscs) based on these hemicyanines, all depended strongly on the anchoring group types and decreased in the order: carboxyl + hydroxyl. carboxyl. sulfonate + hydroxyl, indicating the importance of the dyes' adsorbing groups for their sensitization effects in dsscs. the combination of carboxyl and hydroxyl as anchoring groups led to highly efficient ipces over a wide spectrum region with the maximum ipce of 73.6% and a eta of 5.2% under am1.5 global simulated light (80 mw cm(-2)) for the hc-1 based dssc, which may result from the complex formation between hc-1 and tio2 and the cathodic shift of the excited state oxidation potential.
WOS关键词	NANOCRYSTALLINE TIO2 FILMS ; COUMARIN DYES ; RUTHENIUM SENSITIZERS ; CYANINE ; PHOTOSENSITIZATION ; CONVERSION ; DYNAMICS ; SURFACE ; DESIGN
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000228488100008
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2378052
专题	中国科学院大学
通讯作者	Wang, XS
作者单位	1.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Chen, YS,Li, C,Zeng, ZH,et al. Efficient electron injection due to a special adsorbing group's combination of carboxyl and hydroxyl: dye-sensitized solar cells based on new hemicyanine dyes[J]. Journal of materials chemistry,2005,15(16):1654-1661.
APA	Chen, YS,Li, C,Zeng, ZH,Wang, WB,Wang, XS,&Zhang, BW.(2005).Efficient electron injection due to a special adsorbing group's combination of carboxyl and hydroxyl: dye-sensitized solar cells based on new hemicyanine dyes.Journal of materials chemistry,15(16),1654-1661.
MLA	Chen, YS,et al."Efficient electron injection due to a special adsorbing group's combination of carboxyl and hydroxyl: dye-sensitized solar cells based on new hemicyanine dyes".Journal of materials chemistry 15.16(2005):1654-1661.

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