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Solar cells based on a poly(p‐phenylene vinylene) (PPV) derivative and zinc oxide nanoparticles can reach a power conversion efficiency of 1.6 %. The transport of electrons and holes in these promising devices is characterized and it is found that the electron mobility is equal to 2.8 × 10–9 m2 V–1 s–1, whereas the hole mobility amounts to 5.5 × 10–10 m2 V–1 s–1. By modeling the current–voltage characteristics under illumination it is found that the performance of PPV/zinc oxide solar cells is limited by the charge‐carrier mobilities. Subsequently, how to further improve the efficiency is discussed.
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Koster et al. (2007) studied this question.
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