Electronic structure of C60, CuPc, and C60/CuPc nanoparticles and their layers

The idea to form C-60/CuPc dispersed nanoheterojunctions by photoexcitation of a mixture of C-60 and CuPc nanoparticles has been realized. The electronic structure of the nanoparticles and dispersed nanoheterojunctions formed in the mixture has been characterized by UV-Vis spectroscopy and the comparing with known experimental ultraviolet photoelectron spectra and theoretical models of electronic structure of these molecules. For the mixture of C-60 and CuPc nanoparticles. in toluene and their coating layer on the quartz substrate the band offsets of the edges of CuPc VB and lowest unoccupied molecular orbital (LUMO) of C-60 band are Delta E = 1.55 eV and 1.4eV, respectively. These results show clearly the presence of C-60/CuPc dispersed nanoheterojunctions in the solution and on the quartz surface.