This work was partially supported by the Commission of the European Community (Project MOLYCELL Contract No. 502783) and the BMBF project EKOS: Förderkennzeichen 03N2023.
Design Rules for Donors in Bulk-Heterojunction Solar Cells—Towards 10 % Energy-Conversion Efficiency†
Article first published online: 22 FEB 2006
Copyright © 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 18, Issue 6, pages 789–794, March, 2006
How to Cite
Scharber, M. C., Mühlbacher, D., Koppe, M., Denk, P., Waldauf, C., Heeger, A. J. and Brabec, C. J. (2006), Design Rules for Donors in Bulk-Heterojunction Solar Cells—Towards 10 % Energy-Conversion Efficiency. Adv. Mater., 18: 789–794. doi: 10.1002/adma.200501717
- Issue published online: 15 MAR 2006
- Article first published online: 22 FEB 2006
- Manuscript Accepted: 29 DEC 2005
- Manuscript Received: 18 AUG 2005
- Conducting polymers;
- Conjugated polymers;
- Photovoltaic devices;
- Solar cells, heterojunction
For bulk-heterojunction photovoltaic cells fabricated from conjugated polymers and a fullerene derivative, the relation between the open-circuit voltage (Voc) and the oxidation potential for different conjugated polymers is studied. A linear relation between Voc and the oxidation potential is found (see figure). Based on this relation, the energy-conversion efficiency of a bulk-heterojunction solar cell is derived as a function of the bandgap and the energy levels of the conjugated polymer.