Given that the band gap (Eg) of a-IGZO is ~3.1 eV, these results clearly indicate sub-gap ppNhhBooIttSoGo,eelixixvgcceihitntatatwttiihooinatnht,,cactohownensasibisvstaetenelnendtntwggwtaihtipthhlet(sthEhseget)ihoioaonnnfiziEzaaa-gtIitoGoiofnZnaoO-oIfGfViVZsOOO~tto3or.eV1VsOuOe+...