Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Mobility of Air-Stable p-type Polythiophene Field-Effect Transistors Fabricated Using Oxidative Chemical Vapor Deposition

Lee, S., Song, H.W., Cho, J.Y., Radevski, N., Truc, L.N.T., Sung, T.H., Jiang, Z-T and No, K. (2020) Mobility of Air-Stable p-type Polythiophene Field-Effect Transistors Fabricated Using Oxidative Chemical Vapor Deposition. Journal of Electronic Materials . In Press.

Link to Published Version: https://doi.org/10.1007/s11664-020-07967-5
*Subscription may be required

Abstract

Air-stable organic field-effect transistors (FETs) based on an unsubstituted polythiophene (PT) channel, processed using oxidative chemical vapor deposition (oCVD), have been investigated. The intrinsic properties of PT, including its rigid backbone structure and resistance to reactions with water and oxygen, lead to excellent air stability of oCVD PT-based FET devices. The effect of the channel/metalization contact resistance on the field-effect mobility (μFE) of PT-based FETs has also been investigated. Due to the channel/metallization contact resistance, the actual voltages applied to the channel are found to be significantly lower than the intended drain bias because of the voltage drops that occur at the source/drain contacts. Transmission-line measurements reveal that more than 30% of the intended drain bias is lost at all gate voltages applied to the channel. Reconstructed output characteristics excluding the contact effect allow the extraction of a corrected μFE, which is approximately 40% higher than that with contact resistance.

Item Type: Journal Article
Murdoch Affiliation: College of Science, Health, Engineering and Education
Surface Analysis and Materials Engineering Research Group
Publisher: Springer US
Copyright: © 2020 The Minerals, Metals & Materials Society
URI: http://researchrepository.murdoch.edu.au/id/eprint/54712
Item Control Page Item Control Page