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Proceedings Paper

Highly efficient cyanine dyes used for nanocrystalline TiO2 electrode sensitization
Author(s): Fanshun Meng; Yanjie Ren; Enqin Gao; Shengmin Cai; Kongchang Chen; He Tian
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Paper Abstract

With the development made by Graetzel et al on solar cell, the studies on dye-sensitized nanocrystalline TiO2 solar cell have been widely investigated. Here we synthesized four cyanine dyes containing carboxyl group. The absorption spectra and fluorescent spectra of the dyes in solution and in adsorbed state on the surface semiconductor were measured. These dyes have high absorption coefficient (~10 5M-1 cm-1), which is a major factor that affects the conversion efficiency of the solar cell. These cyanine dyes were used to sensitize nanocrystalline TiO2, and the photoelectrochemical properties of the electrodes sensitized by these cyanine dyes were measured. From the absorption spectra of the electrode it can be seen that these dyes have been efficiently adsorbed on nanocrystalline TiO2. The maximum IPCE values of dye CY-1, CY-2, CY-3 and CY-4 were 42%, 51.8%, 75.9% and 22.2% respectively. The results show that cyanine dye derivatives are promising sensitizers for nanocrystalline solar cell.

Paper Details

Date Published: 21 February 2002
PDF: 6 pages
Proc. SPIE 4465, Organic Photovoltaics II, (21 February 2002); doi: 10.1117/12.456935
Show Author Affiliations
Fanshun Meng, East China Univ. of Science and Technology (China)
Yanjie Ren, Peking Univ. (China)
Enqin Gao, Peking Univ. (China)
Shengmin Cai, Peking Univ. (China)
Kongchang Chen, East China Univ. of Science and Technology (China)
He Tian, East China Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 4465:
Organic Photovoltaics II
Zakya H. Kafafi; Denis Fichou, Editor(s)

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