Ambipolar blends of CuPc and C60: charge carrier mobility, electronic structure and its implications for solar cell applications

摘要

Ambipolar transport has been realised in blends of the molecular holeconductor Cu-phthalocyanine (CuPc) and the electron conducting fullerene C60.Charge carrier mobilities and the occupied electronic levels have been analyzedas a function of the mixing ratio using field-effect transistor measurementsand photoelectron spectroscopy. These results are discussed in the context ofphotovoltaic cells based on these materials.