Based on the grain barrier model of Levinson an expression of the off-current Ioff of a thin-film transistor is derived. The dependence of Ioff on the donor concentration N D and the semiconductor thickness d s is discussed and compared to experimental data. It is shown that N Dds has to be smaller than the grain-boundary trap concentration in order to obtain enhancement thin-film transistors completely turned off at Va = O.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.