Skip to main content

Research Repository

Advanced Search

Detection of acetone vapours using solution-processed tin oxide thin-film transistors

Miller, Lauren R.; Borthwick, Robert J.; dos Santos, Paloma L.; Chaudhry, Mujeeb U.

Detection of acetone vapours using solution-processed tin oxide thin-film transistors Thumbnail


Authors

Profile Image

Lauren Miller lauren.r.miller@durham.ac.uk
PGR Student Doctor of Philosophy



Abstract

Abnormal concentrations of volatile organic compounds (VOCs) in human breathe can be used as disease-specific biomarkers for the non-invasive diagnosis of medical conditions, such as acetone for diabetes. Solution-processed bottom gate top contact metal oxide thin-film transistors (TFTs) are used to detect acetone vapours, as part of a proof-of-concept study. The effect of increasing annealing temperature (T) and channel length (L) on electrical and sensing performance are explored. Drain current (Ids) increases following exposure as acetone undergoes a redox reaction with the adsorbed oxygen species on the semiconductor surface, which results in free electrons being released back into the conduction band. Responsivity (R) is maximized at negative bias (Vgs < 0). For L = 50 μm, the peak R of the TFT annealed at 450 °C is three times greater than that of the TFT annealed at 350 °C, with Vgs = − 37.5 V and − 33 V, respectively.

Citation

Miller, L. R., Borthwick, R. J., dos Santos, P. L., & Chaudhry, M. U. (2023). Detection of acetone vapours using solution-processed tin oxide thin-film transistors. MRS Advances, 8, 440–445. https://doi.org/10.1557/s43580-023-00494-5

Journal Article Type Article
Acceptance Date Jan 4, 2023
Online Publication Date Jan 13, 2023
Publication Date 2023-07
Deposit Date Feb 8, 2023
Publicly Available Date Feb 8, 2023
Journal MRS Advances
Electronic ISSN 2059-8521
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 8
Pages 440–445
DOI https://doi.org/10.1557/s43580-023-00494-5
Public URL https://durham-repository.worktribe.com/output/1183263

Files

Published Journal Article (1.3 Mb)
PDF

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.





You might also like



Downloadable Citations