V. D. Mihailetchi, H. X. Xie, B. de Boer, L. J. A. Koster and P. W. M. Blom Charge Transport and Photocurrent Generation in Poly(3-hexylthiophene): Methanofullerene Bulk-Heterojunction Solar Cells Advanced Functional Materials 16
The effect of controlled thermal annealing on charge transport and photogeneration in bulk-heterojunction solar cells made from blend films of poly(3-hexylthiophene) (P3HT) and methanofullerene is investigated. The hole mobility in the P3HT phase of the blend is dramatically affected by annealing (see Figure). An increase in this hole mobility is the most important factor leading to a strong enhancement of the efficiency.
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