Work

Do Contact Effects Always Mean Slow? Fast-Switching Contact-Controlled Multimodal Transistors

Year: 2024

Type: article

Abstract: We investigate a mechanism for greatly improving switching speed in contact-controlled thin-film transistors (TFTs), which have persistently performed much slower than Ohmic contact variants. Separating the mechanisms for charge injection and conduction can result in transient settling times two orders of magnitude lower than existing contact-controlled devices [e.g., source-gated transistor (SGT)] and even lower than in Ohmic contact TFTs for a given drain current. High-speed operation is not necessarily only promoted by the well-studied reduction in contact resistance, but rather by the presence of a pre-charged accumulation layer in the source region. These findings greatly expand the applicability of contact-controlled transistors.

Source: IEEE Transactions on Electron Devices

DOI: 10.1109/ted.2024.3485032

Authors: Eva Bestelink, Olivier de Sagazan, Radu A. Sporea

Institutions: University of Surrey, Institut d'Électronique et des Technologies du numéRique, Université de Rennes

Language: English

Topic: Thin-Film Transistor Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Awards: Design for high-yield manufacturing of printed circuits, A new low-complexity paradigm for analogue computation and hardware learning, G3270832594, G6670053684