Photoinduced charge transfer in complex architectured films of C-60 and donor-like molecules

Multilayers and co-evaporated films of C-60 and donor-like molecules as alp ha-sexithiophene (T6) and Me-Phthalocyanine (MePC) have been deposited in U HV by means of molecular beam deposition (O-MBD). The photogeneration of ch arge transfer states have been investigated by means of photoinduced absorp tion, photoluminescence and photoconductivity measurements in the framework of possible developments of these systems both as photovoltaic devices and as optical limiting. In the case of MePC the peculiar matching of the chem ical potentials of the two molecules (C-60 and MePC) give rice to a weak ch arge transfer in the N.I.R. observable also as a new absorption at about 1 eV.