Abstract
Recent aspects are reviewed on electronic processes in organic semiconductors, especially on photoconductive processes in anthracene crystals. Optical and photosensitive properties and recently developed experimental techniques are described.
Then a following postulate is proposed on the photoconductive process. Excitons are produced by exciting light and migrate through a crystal. Most of excitons diminish to, emit fluorescence, and the others are trapped in some trapping levels, which may make the trapped excitons ionized. This model may explain activation energies of photoconduction and peaks in a conduction glow curve.
