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It is shown that the introduction of functionalized single-walled carbon nanotubes SWNTs in bulk heterojunction
polymer-fullerene photovoltaic devices results in an improvement of both the short circuit current density and the fill
factor. An optimum performance with a power conversion efficiency of 1.4% is obtained with 0.5 wt% of SWNTs in a
(1:1) P3HT/PCBM mixture. The results indicate that the addition of nanotubes enhances the performance of polymerfullerene
photovoltaic cells by means of both the electron accepting feature of fullerenes and the high electron transport
capability of SWNTs.
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Emmanuel Kymakis, Emmanuel Koudoumas, "P3HT/PCBM/SWNTs photovoltaic devices," Proc. SPIE 6999, Organic Optoelectronics and Photonics III, 69991N (16 April 2008); https://doi.org/10.1117/12.782785