Abstract
Abstract Results of recent time-of-flight transport measurements on the silicon backbone polymer poly(methylphenylsilylene) (PMPS) carried out over broad ranges of fields and temperatures described in much greater detail than heretofore. The relative effect of a series of chemical dopants in reducing the hole drift mobility of PMPS is correlated with their respective ionization potentials. Doping effects can be completely understood on the basis of a simple model which is described. Transport in PMPS manifests the key features observed in a broad class of polysilylenes containing aromatic and/or aliphatic side group substituents including those completely devoid of π electrons. Side-group substituents in saturated carbon backbone polymers such as poly(N-vinylcarbazole) completely dominate the transport process which is hopping between the carbazole chromophores. In contrast with this behaviour, comparative measurements indicate that side-group substituents in polysilylenes play a secondary role. The compl...
Published Version
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