The Role of Interfaces in Photovoltaic Devices

Summary.

 Organic opto-electronic devices comprise one or more organic layers and the electrodes. The interfaces between these very different components play a crucial role to the performance of the devices. In donor–acceptor composites for photovoltaics, the electronic processes occurring at the interface will benefit from a particular interface morphology on the 10–100 nanometer level; this is demonstrated for composites of oligophenylenevinylene and C₆₀. Phase separation on such a scale may be achieved naturally in diblock copolymers. The synthesis of an OPV–C₆₀ diblock copolymer is described.