Zinc Tin Oxide Thin-Film-Transistor Enhancement/Depletion Inverter

A fabrication process to create a zinc tin oxide (ZTO) thin-film-transistor (TFT) enhancement/depletion inverter using 15-mum channel lengths is developed. Both enhancement- and depletion-mode staggered bottom-gate ZTO TFTs are simultaneously fabricated on a single substrate using a single sputter target and postdeposition anneal step. At a rail voltage of 10 V, this inverter has a gain of 10.6 V/V.