PHOTOCONDUCTIVITY IN POLYMERS - CHEMICAL STRUCTURES AND PHYSICAL-MECHANISMS

Synthesis and photoconductivity measurements are presented for two different types of photoconductors: i) polymers with pendant carbazolyl groups and ii) conjugated polymers. The temperature- and field dependence of the effective carrier mobility has been measured in a series of polymethacrylates with pendant carbazolyl groups and is discussed in relation to theoretical models. Time-of-flight measurements show that conjugated polymers like poly(methylphenylsilane) and poly(1,4-phenylenevinylene) exhibit extremely high carrier mobilities.