Light-emitting organic solar cells based on a 3D conjugated system with internal charge transfer

Simple single-layered diodes based on a glass-forming triphenylamine-thienyl- enevinylene with internal charge transfer show a photovoltaic effect in solar light and red electroluminescence when forward biased (see figure and cover). The use of an additional layer Of C-60 as electron acceptor improves the photovoltaic performance without affecting the electroluminescence.