title: Sustained hole inversion layer in a wide-bandgap metal-oxide semiconductor with enhanced tunnel current.
abstract: Wide-bandgap, metal-oxide thin-film transistors have been limited to low-power, n-type electronic applications because of the unipolar nature of these devices. Variations from the n-type field-effect transistor architecture have not been widely investigated as a result of the lack of available p-type wide-bandgap inorganic semiconductors. Here, we present a wide-bandgap metal-oxide n-type semiconductor that is able to sustain a strong p-type inversion layer using a high-dielectric-constant barrier dielectric when sourced with a heterogeneous p-type material. A demonstration of the utility of the inversion layer was also investigated and utilized as the controlling element in a unique tunnelling junction transistor. The resulting electrical performance of this prototype device exhibited among the highest reported current, power and transconductance densities. Further utilization of the p-type inversion layer is critical to unlocking the previously unexplored capability of metal-oxide thin-film transistors, such applications with next-generation display switches, sensors, radio frequency circuits and power converters.
authors: Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9.
authors: Gem
authors: G
authors: Shoute
authors: Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9.
authors: Amir
authors: A
authors: Afshar
authors: Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9.
authors: Triratna
authors: T
authors: Muneshwar
authors: Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9.
authors: Kenneth
authors: K
authors: Cadien
authors: Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 1H9.
authors: Douglas
authors: D
authors: Barlage