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Characterization of large area flexible plastic solar cells based on conjugated polymer/fullerene composites

Author(s): Desta Gebeyehu | F. Padinger | C. J. Brabec | T. Fromherz | J. C. Hummelen | N. S. Sariciftci

Journal: International Journal of Photoenergy
ISSN 1110-662X

Volume: 1;
Issue: 2;
Start page: 95;
Date: 1999;
Original page

The quality and homogeneity of composite films as well as the choice of the substrates strongly influence the efficiency of the solar cells. One of the most important limiting factors in the performance of this present types of molecular solar cells based on interpenetrating networks of conjugated polymers and fullerene derivatives is the charge carrier transport in the active layer. This transport is driven by the electrical field provided externally by the top and bottom electrodes with different work functions. We present here efficiency and stability studies on large area (6 cm × 6 cm) flexible plastic solar cells with monochromatic energy conversion efficiency ηe about 1.4% and carrier collection efficiency nearly 20%.
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