Fig. 4: Electrical characteristics of ZrO₂/SnO₂ TFTs.

a Schematic diagram of the fabricated ZrO₂/SnO₂ TFT structures. b Transfer and (c) output characteristics of the devices. Transfer characteristics of the devices under(d) PBS, and (e) NBS. f V_th shift as a function of stress time under PBS and NBS.