Electric field and wavelength dependence of charge carrier photogenerationin soluble poly(p-phenylenevinylene) derivatives

Communication: The charge carrier photogeneration efficiency (eta) of two p oly(p-phenylenevinylene) derivatives is determined by emission-limited phot oinduced xerographic discharge (XD). High efficiencies of up to 20 % at 100 V/mu m are reported. The advantages of XD, for example, that the build up of space charge is prevented and problems associated with a second electrod e can be circumvented, are also described. Photogeneration of charge carrie rs in conjugated polymers is of interest for applications in photoreceptors , photodiodes, and solar cells.