Article révisé par les pairs
Résumé : The organic materials Cu-phthalocyanine and the bisarylamidine-perylenes BBP-perylene possess the advantages of cheap processing, high stability, electron-donating resp. accepting-properties and absorption-spectra covering a wide range of the solar irradiance spectrum favoring their application in photovoltaic cells. We have used IV-characterization and photocurrent action spectroscopy to examine the predictions of a theoretical model describing the dependency of the power conversion efficiency on the thickness of the active layer. The photocurrent response is governed by the internal filter effect as well as the absorption density distribution in the device.