Abstract

Cast and spin coat films of C 60 derivatives with a long alkyl chain were prepared. The X-ray analysis confirmed that the cast film formed a layer structure and the spin coat film has an amorphous structure. In the photocurrent spectra of both films, a peak around 720 nm was detected, which corresponds to an absorption peak in its solution. The peak, due to the interaction between the C 60 moieties, is not observed clearly. I (photocurrent) /I (darkcurrent) of the cast film is much larger than that of the spin coat film.

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