N-channel transparent organic thin-film transistors with Ag/LiF bilayer transparent source–drain electrodes fabricated by thermal evaporation

In this paper, we report the use of Ag/LiF (AL) bilayer transparent source–drain (S/D) electrodes for n-channel F16CuPc-based transparent organic thin-film transistors (OTFTs). The transparent electrodes are deposited at room temperature by thermal evaporation, with devices subsequently fabricated without damaging the active layer or breaking the vacuum. Consequently, we obtain transparent OTFTs based on AL bilayer transparent S/D electrodes with good electron mobility of 1.31 × 10−2 cm−2·V−1·s−1, a high on/off ratio of 4.2 × 106, and an average visible range transmittance of 55.6%.