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Hao Xin, Xugang Guo, Guoqiang Ren, Mark D. Watson and Samson A. Jenekhe Efficient Phthalimide Copolymer-Based Bulk Heterojunction Solar Cells: How the Processing Additive Influences Nanoscale Morphology and Photovoltaic Properties Advanced Energy Materials 2

Version of Record online: 13 MAR 2012 | DOI: 10.1002/aenm.201100718

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The role of the processiing additive in achieving optimal interconnected two-phase nanomorphology and 10-fold enhancement in the efficiency of p-type copolymer (PhBTEH)/fullerene bulk heterojunction solar cells is found to be the inhibition of fullerene intercalation into the polymer side chains and regulation of the relative crystallization/aggregation rates of the polymer and fullerene.

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