We have optimized dihexylquaterthiophene-based thin film transistors for low-power consumption and have studied their characteristics for potential introduction in analog circuits. Bottom-gate devices with Pd source and drain electrodes have been fabricated by employing different gate dielectrics. Transistors with very thin (< 10 nm) silicon oxynitride dielectrics display subthreshold swing values below 100 mV/decade, cutoff frequencies approaching the kilohertz range and intrinsic gain around 45 dB, suggesting that they are promising candidates for low-power analog integration.
Serban, D. A., Flandre, D., Kilchytska, V., Vlad, A., Martin-Hoyas, A., Nysten, B., Jonas, A., Geerts, Y. H., Lazzaroni, R., Bayot, V., & Melinte, S. (2008). Low-power dihexylquaterthiophene-based thin film transistors for analog applications. Applied Physics Letters, 92(14), 143503. https://doi.org/10.1063/1.2904963 (Original work published 2008)