This research was supported by Konarka Technologies (Lowell, MA) and by the Air Force Office of Scientific Research, AFOSR, under FA9550–05–0139 and by AFOSR through the MURI Center (“Polymer Smart Skins”, F49620–01–10364), Charles Lee, Program Officer.
Thermally Stable, Efficient Polymer Solar Cells with Nanoscale Control of the Interpenetrating Network Morphology†
Article first published online: 1 SEP 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 15, Issue 10, pages 1617–1622, October, 2005
How to Cite
Ma, W., Yang, C., Gong, X., Lee, K. and Heeger, A. J. (2005), Thermally Stable, Efficient Polymer Solar Cells with Nanoscale Control of the Interpenetrating Network Morphology. Adv. Funct. Mater., 15: 1617–1622. doi: 10.1002/adfm.200500211
- Issue published online: 28 SEP 2005
- Article first published online: 1 SEP 2005
- Manuscript Accepted: 7 JUN 2005
- Manuscript Received: 13 APR 2005
- Conjugated polymers;
- Solar cells
By applying the specific fabrication conditions summarized in the Experimental section and post-production annealing at 150 °C, polymer solar cells with power-conversion efficiency approaching 5 % are demonstrated. These devices exhibit remarkable thermal stability. We attribute the improved performance to changes in the bulk heterojunction material induced by thermal annealing. The improved nanoscale morphology, the increased crystallinity of the semiconducting polymer, and the improved contact to the electron-collecting electrode facilitate charge generation, charge transport to, and charge collection at the electrodes, thereby enhancing the device efficiency by lowering the series resistance of the polymer solar cells.