Proceedings PaperRelaxation And Localization Of Photogenerated Charges In Organic Solids
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Three major developments in the theory of electronic excitations in organic solids have occurred during the past decade. First, the role of electron correlation in localizing photoinduced molecular ion states within molecules has been analyzed in detail. Second, it has been recognized that under most circumstances structural disorder localizes photogener-ated charges as individual molecular ions in organic solids. Third, the collective behavior associated with quasi-one-dimensional organic solids (e.g., polyacetylene) has been studied intensively. This paper is a brief review of the central concepts underlying these three developments with emphasis on their implications for soft-X-ray photoemission.