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
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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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