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2020 | OriginalPaper | Chapter

Conductance and Photoconductance of Indium Oxide-Zinc Oxide Composites in the Hydrogen-Containing Atmosphere

Authors : A. S. Ilin, P. A. Forsh, M. I. Ikim, A. V. Koroleva, M. N. Martyshov, L. I. Trakhtenberg, P. K. Kashkarov

Published in: 4th International Conference on Nanotechnologies and Biomedical Engineering

Publisher: Springer International Publishing

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Abstract

Photovoltaic properties of composites based on nanocrystalline indium and zinc oxides, promising as sensitive elements of gas sensors, were investigated. It is shown that under visible light the conductivity of composites changes with the change of hydrogen concentration in the environment even at room temperature, which allows the use of composites to detect hydrogen without heating. The curves of the kinetics of photoconductivity of the composites are studied and possible mechanisms of photoconductivity are analyzed. The mechanism of the sensor response of composites under illumination is proposed. The mechanism considers the illumination turns the composite into nonequilibrium state and the photoconductivity change in the H₂ atmosphere is linked with alteration of nonequilibrium charge carriers recombination rate.

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Title: Conductance and Photoconductance of Indium Oxide-Zinc Oxide Composites in the Hydrogen-Containing Atmosphere
Authors: A. S. Ilin
P. A. Forsh
M. I. Ikim
A. V. Koroleva
M. N. Martyshov
L. I. Trakhtenberg
P. K. Kashkarov
Publisher: Springer International Publishing
Book: 4th International Conference on Nanotechnologies and Biomedical Engineering
Print ISBN: 978-3-030-31865-9

Electronic ISBN: 978-3-030-31866-6

Copyright Year: 2020
DOI: https://doi.org/10.1007/978-3-030-31866-6_74