Abstract
An enhanced photocurrent was observed for a Schottky-barrier cell with a mixed solid consisting of metal-free porphyrin (H 2tpp) and regioregular polythiophene (PTh) compared to similar cells with pure metal-free porphyrin or pure PTh. This is because produced holes efficiently transport in the high-mobility PTh solid soon after a photoinduced electron-transfer from the PTh molecule to the photon harvesting H 2tpp molecule.
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