Unspecified Eva Bestelink Profile

Eva Bestelink

at Univ of Surrey

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Proceedings Article | 5 March 2021 Presentation + Paper

Oxide transistors: unconventional architectures and their applications

Eva Bestelink, Kham Niang, Indrachapa Rajapakshe Mudiyanselage, Georgios Bairaktaris, David Frohlich, Radu Sporea

Proceedings Volume 11687, 116871G (2021) https://doi.org/10.1117/12.2585755

KEYWORDS: Transistors, Oxides, Thin films, Tolerancing, Sensors, Numerical simulations, Human-machine interfaces

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Thin-film transistors deliberately comprising rectifying source contacts have attractive properties for sensor and driver circuits: high performance uniformity and geometrical tolerance; superior saturation; and high intrinsic gain. The paper reviews the source-gated and multimodal thin-film transistor configurations, and presents their proposed applications to ultra-compact sensing and data processing circuits. Source-gated transistors with nanoscale tunneling contacts offer an alternative to the Schottky-contact fabrication route, which presents processing challenges. Emerging multimodal transistors overcome limitations of traditional contact-controlled devices and add to the list of useful properties: high gain or constant transconductance by design; immunity to drain voltage variations in floating gate configuration; and a significantly faster response time than source-gated transistors. These devices form the foundation for the design of compact, yet extremely versatile, thin-film circuits for sensing, signal conditioning and signal conversion. Finally, a vision is presented in which the properties of these circuits will be essential to convey seamless user interactivity to physical objects, transforming them into intuitive user interfaces beyond traditional displays screens.

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