Zinc Oxide Thin-Film Transistors - Ngwashi, Divine Khan
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Transparent oxide semiconducting films have continued to receive considerable attention, from a fundamental and application-based point of view, primarily because of their useful fundamental properties. Of particular interest is zinc oxide (ZnO), an n-type semiconductor that exhibits excellent optical, electrical, catalytic and gas-sensing properties, and has many applications in various fields. In this work, thin film transistor (TFT) arrays based on ZnO have been prepared by reactive radio frequency (RF) magnetron sputtering. The sputtering process was carried out at room temperature with no…mehr

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Produktbeschreibung
Transparent oxide semiconducting films have continued to receive considerable attention, from a fundamental and application-based point of view, primarily because of their useful fundamental properties. Of particular interest is zinc oxide (ZnO), an n-type semiconductor that exhibits excellent optical, electrical, catalytic and gas-sensing properties, and has many applications in various fields. In this work, thin film transistor (TFT) arrays based on ZnO have been prepared by reactive radio frequency (RF) magnetron sputtering. The sputtering process was carried out at room temperature with no intentional heating. The aim of this is to prepare ZnO thin films with stable semiconducting electrical properties to be used as the active channel in TFTs; and to understand the role of intrinsic point defects in device performance and stability. The effect of oxygen (O2) adsorption on TFT device characteristics is also investigated. TFTs incorporating silicon dioxide, and different high-kdielectrics are also investigated.
Autorenporträt
Divine K. Ngwashi holds a PhD in Electronics Engineering (De Montfort University), an MSc in Physics (Umeå University) and a BSc. in Physics (University of Buea). Currently works as a lecturer in the faculty of Technology at De Montfort University.