Mapping the nanoscale effects of charge traps on electrical transport in grain structures of indium tin oxide thin films.

ABSTRACT: We report the mapping of the nanoscale effects of charge trap activities in the grain structures of an oxygen plasma-treated indium tin oxide (ITO) thin film. Here, a conducting Pt probe made direct contact with the surface of an ITO thin film and scanned the surface while measuring the maps of electrical currents and noises. The measured data were analyzed to obtain the maps of sheet conductance (G _s) and charge trap density (N _eff) in the grain structures of the ITO thin film. The results showed that grain boundaries exhibited a lower sheet conductance and a higher charge trap density than those of the regions inside grains. Interestingly, the scaling behavior of G _s ∝ N _eff ^-0.5 was observed in both grain

SUBMITTER: Jeon H 

PROVIDER: S-EPMC8386405 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature