Abstract
The sensitivity of gas sensors made of doped SnO2:Co metal oxide for the detection of hydrogen peroxide vapors in the environment was studied using current-voltage, frequency-capacitance, and transient characteristics. Their measurements were carried out at room temperature under the influence of ultraviolet light and without it. It is shown that the influence of ultraviolet rays on the active surface of the sensor increases the gas sensitivity of the sensor. Studies of transient characteristics have also shown that the resistance of the sensor when it is exposed to ultraviolet rays, already at room temperature, after the feeding-off of hydrogen peroxide vapors is almost completely restored.
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Funding
These investigations were carried out in the framework of the Scientific Committee of the Ministry of Education, Science, Culture, and Sport of the Republic of Armenia’ 19YR-2K002 (2019–2021) program of financial support of young scientists.
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Aleksanyan, M.S., Sayunts, A.G., Zakaryan, H.A. et al. Investigations of Sensors for Detection of Hydrogen Peroxide Vapors under the Influence of UV Illumination. J. Contemp. Phys. 55, 205–212 (2020). https://doi.org/10.3103/S1068337220030032
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DOI: https://doi.org/10.3103/S1068337220030032