Peculiar Properties of Charge Transfer in a Multilayered Film Structure upon Selective Pulsed Photoexcitation

Abstract— Vectorial charge transfer upon pulsed laser excitation in three-layer Langmuir–Schäfer structures consisting of 100% photoactive molecules of porphyrin-fullerene dyad, phthalocyanine and polythiophene was studied. The behavior of the photovoltaic responses of the structures changed significantly upon selective optical excitation of monolayers. The mechanisms of the vectorial charge transfer in samples depending on the individual components photoexcitation of the structure are discussed.