Abstract
We investigated the charge transport in organic thin film transistors based on the variable range hopping theory, including the contribution of contact resistance. The impact of contact resistance on the temperature dependence of the extracted mobility is extensively analyzed. It was found that contact resistance is responsible for the experimentally observed no-Arrhenius behavior of charge transport in organic transistors in the low temperature region. The developed model quantitatively explains the temperature dependence of mobility observed in conjugated polymer thin film transistor.
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