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Full Paper
Dipolar Compounds Containing Fluorene and a Heteroaromatic Ring as the Conjugating Bridge for High-Performance Dye-Sensitized Solar Cells
Article first published online: 29 JAN 2010
DOI: 10.1002/chem.200903151
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Chen, C.-H., Hsu, Y.-C., Chou, H.-H., Thomas, K. R. Justin., Lin, Jiann T. and Hsu, C.-P. (2010), Dipolar Compounds Containing Fluorene and a Heteroaromatic Ring as the Conjugating Bridge for High-Performance Dye-Sensitized Solar Cells. Chem. Eur. J., 16: 3184–3193. doi: 10.1002/chem.200903151
Publication History
- Issue published online: 1 MAR 2010
- Article first published online: 29 JAN 2010
- Manuscript Received: 17 NOV 2009
Funded by
- National Science Council
- Academia Sinica
Keywords:
- donor–acceptor systems;
- energy conversion;
- fluorenes;
- solar cells;
- sulfur heterocycles
Abstract
A novel series of dipolar organic dyes containing diarylamine as the electron donor, 2-cyanoacrylic acid as the electron acceptor, and fluorene and a heteroaromatic ring as the conjugating bridge have been developed and characterized. These metal-free dyes exhibited very high molar extinction coefficients in the electronic absorption spectra and have been successfully fabricated as efficient nanocrystalline TiO2 dye-sensitized solar cells (DSSCs). The solar-energy-to-electricity conversion efficiencies of DSSCs ranged from 4.92 to 6.88 %, which reached 68–96 % of a standard device of N719 fabricated and measured under the same conditions. With a TiO2 film thickness of 6 μm, DSSCs based on these dyes had photocurrents surpassing that of the N719-based device. DFT computation results on these dyes also provide detailed structural information in connection with their high cell performance.