ABSTRACT
Moses et al. (1987, 1987a) and Moses and Heeger (1989) measured photo generation efficiencies in poly(diacetylene toluene-sulfonate) single crystals. The authors argued that the high and temperature independent photogeneration effi ciencies are not consistent with the Onsager theory, contrary to earlier conclu sions of Lochner et al. (1976), Donovan and Wilson (1981), and Seiferheld et al. (1983). It was further argued that the high efficiencies were due to the thermalization of a hot electron, which results in a higher probability of escape from the Coulomb well. A somewhat different argument was proposed by Donovan and Wilson (1989), who suggested that the initial photoexcitation creates a relatively small population of hot carriers while the majority are created with low energy. The photogeneration of the low-energy carriers was described by the Onsager formalism.
