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Jeffrey J. Richards, Andrew H. Rice, Rainie D. Nelson, Felix S. Kim, Samson A. Jenekhe, Christine K. Luscombe and Danilo C. Pozzo Modification of PCBM Crystallization via Incorporation of C60 in Polymer/Fullerene Solar Cells Advanced Functional Materials 23

Article first published online: 31 AUG 2012 | DOI: 10.1002/adfm.201201100

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A simple strategy for the reduction of the size of large [6,6]-phenyl C61 butyric acid methyl ester (PCBM) crystallites is reported. The addition of C60 to the fullerene phase of poly(3-hexylthiophene) (P3HT)/PCBM solar cells provides a simple means to reduce the size of large PCBM aggregates that lead to the degradation of performance at operational temperatures and thereby improve the long-term performance of such devices.

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