An easily accessible carbon material derived from carbonization of polyacrylonitrile ultrathin films: ambipolar transport properties and application in a CMOS-like inverter†
Ultrathin carbon films were prepared by carbonization of a solution processed polyacrylonitrile (PAN) film in a moderate temperature range (500–700 °C). The films displayed balanced hole (0.50 cm2 V−1 s−1) and electron mobilities (0.20 cm2 V−1 s−1) under ambient conditions. Spectral characterization revealed that the electrical transport is due to the formation of sp2 hybridized carbon during the carbonization process. A CMOS-like inverter demonstrated the potential application of this material in the area of carbon electronics, considering its processability and low-cost.