This work was supported by the Deutsche Forschungsgemeinschaft via the Leibniz-Preis and the Fonds der chemischen Industrie.
Efficient Vacuum-Deposited Organic Solar Cells Based on a New Low-Bandgap Oligothiophene and Fullerene C60†
Article first published online: 10 OCT 2006
Copyright © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 18, Issue 21, pages 2872–2875, November, 2006
How to Cite
Schulze, K., Uhrich, C., Schüppel, R., Leo, K., Pfeiffer, M., Brier, E., Reinold, E. and Bäuerle, P. (2006), Efficient Vacuum-Deposited Organic Solar Cells Based on a New Low-Bandgap Oligothiophene and Fullerene C60. Adv. Mater., 18: 2872–2875. doi: 10.1002/adma.200600658
- Issue published online: 30 OCT 2006
- Article first published online: 10 OCT 2006
- Manuscript Revised: 29 JUN 2006
- Manuscript Received: 28 MAR 2006
- Deutsche Forschungsgemeinschaft via the Leibniz-Preis and the Fonds der chemischen Industrie
- Photovoltaic devices;
- Solar cells, heterojunction;
- Solar cells, organic
Organic solar cells based on a new oligothiophene derivative (see figure) and fullerene C60 exhibit power efficiencies of up to 3.4 %. α,α′-Bis(2,2-dicyanovinyl)-quinquethiophene (DCV5T) features a reduced optical gap with high absorption coefficients between 450 and 650 nm. Dicyanovinyl substituents on the oligothiophene rings lower the bandgap and increase the ionization energy of these oligomers, enabling the formation of photoactive heterojunctions with C60 and yielding open-circuit photovoltages as high as 1 V.