The results of studies of the time dependence of conductivity of hydrogen sensors, based on thin polycrystalline films of tin dioxide, in the thermo-cyclic operation mode, are presented. A method for determining the energy band bending at the interface of the contacting SnO2 microcrystals in the tin-dioxide film and two methods for measuring the low concentrations of hydrogen (\( {{\mathrm{n}}_{{{{\mathrm{H}}_2}}}}<{10^4} \) ppm) are proposed. It is shown that the sensors of this type in the thermo-cyclic operation mode are characterized by high values of the response to the impact of H2, high sensitivity, and high speed.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 96–102, December, 2013.
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Gaman, V.I., Sevast’yanov, Е.Y., Маksimova, N.K. et al. Characteristics of the Semiconductor Resistive Hydrogen Sensors in the Thermo-Cyclic Operation Mode. Russ Phys J 56, 1427–1434 (2014). https://doi.org/10.1007/s11182-014-0195-9
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DOI: https://doi.org/10.1007/s11182-014-0195-9