Electron mobility in hexaazatriphenylene hexacarbonitrile field-effect transistors

We report on the field-effect mobility of electrons in thin films of hexaazatriphenylene hexacarbonitrile. An electron mobility of up to 2.5 × 10−4 cm2/Vs is obtained at room temperature. The temperature dependence of the mobility is in agreement with hoping transport in weakly coupled organic semiconductors. Moreover, the surface morphology of the corresponding thin films reveals a domain-like feature in nanoscale size.

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► Field-effect mobility of electrons in hexaazatriphenylene hexacarbonitrile (HAT-CN).
► An electron mobility of up to 2.5 × 10−4 cm2/Vs is obtained.
► The temperature dependence of the mobility is in agreement with hoping transport.
► The surface morphology reveals a domain-like feature in nanoscale size.