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Martijn Lenes, Gert-Jan A. H. Wetzelaer, Floris B. Kooistra, Sjoerd C. Veenstra, Jan C. Hummelen and Paul W. M. Blom Fullerene Bisadducts for Enhanced Open-Circuit Voltages and Efficiencies in Polymer Solar Cells Advanced Materials 20

Version of Record online: 24 APR 2008 | DOI: 10.1002/adma.200702438

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A fullerene bisadduct can enhance the efficiency of polymer:fullerene bulk heterojunction solar cells. The bisadduct has a LUMO that is 100 meV higher compared to that of [6,6]-phenyl C61 butyric acid methyl ester (PCBM). This increases the open-circuit voltage of polymer:fullerene bulk heterojunction solar cells based on poly(3-hexylthio phene) and bisadduct PCBM to 0.73 V, while maintaining high fill factors and currents.

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