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Weiwei Li, Koen H. Hendriks, W. S. Christian Roelofs, Youngju Kim, Martijn M. Wienk and René A. J. Janssen Efficient Small Bandgap Polymer Solar Cells with High Fill Factors for 300 nm Thick Films Advanced Materials 25

Article first published online: 6 MAR 2013 | DOI: 10.1002/adma.201300017

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A high-molecular-weight conjugated polymer based on alternating electron-rich and electron-deficient fused ring systems provides efficient polymer solar cells when blended with C60 and C70 fullerene derivatives. The morphology of the new polymer/fullerene blend reduces bimolecular recombination and allows reaching high fill factors and power conversion efficiencies for films up to 300 nm thickness.

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