Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films


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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering , Engineering, Electrical & Electronic


eISSN: 1178-5608



VOLUME 7 , ISSUE 5 (December 2014) > List of articles

Special issue ICST 2014

Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films

Maciej Trawka / Janusz Smulko * / Lech Hasse / Radu Ionescu / Fatima E. Annanouch / Eduard Llobet / Claes G. Granqvist / Laszlo B. Kish

Keywords : AuNP-decorated WO3 nanowires; fluctuation enhanced sensing; UV light; noise

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 7, Issue 5, Pages 1-5, DOI: https://doi.org/10.21307/ijssis-2019-030

License : (CC BY-NC-ND 4.0)

Published Online: 15-February-2020



WO3 nanowires (WO3-NWs) decorated with gold nanoparticles (AuNPs) were utilized in resistive gas sensor devices to detect ethanol by use of fluctuation enhanced sensing (FES).  The experimental system records both DC resistance and fluctuations of the sensing film. Our data verify that the sensitivity and selectivity of the gas sensor are improved by applying FES when the sensor is stimulated with a combination of UV light and heating. We conclude that UV light can produce improved gas sensing at low operating temperatures for the investigated AuNPdecorated WO3-NWs films.

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