Photocarrier recombination dynamics of Perovskite Semiconductor SrTiO3 -- Excitations at high densities and gradients encountered in scintillation detectors of radiation -- Self-trapping of charge carriers and excitons examined by DFT and hybrid functional methods -- Optical properties of large-area graphene thin films and their applications in solar cells -- Nanostructured architectures in photovoltaics -- Influence of excitonic processes in the energy resolution of scintillators -- Electronic properties of amorphous semiconductors -- Exciton diffusion and dissociation in organic photovoltaic and light emitting devices -- Optical two-dimensional Fourier Transform Spectroscopy of exciton dynamics in P3HT thin films -- Optical and electronic processes in semiconductor materials for device applications -- Light harvesting in organic solar cells -- Exciton-surface plasmon interaction in metallic nanocomposites -- Electronic structures of planar and nonplanar polyfluorenes.