New materials and sensors for semiconductor gas analysis

Kirovskaya, I. A.; Kirovskaya, T. A.; Ekkert, A. O.

doi:10.25206/1813-8225-2020-170-58-62

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2021

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“…Sensors based on typical semiconductors (including binary type A 3 B 5 , A 2 B 6 ) are capable of detecting a large number of different substances at low temperatures, up to room temperature, which makes them quite promising. The operation of semiconductor sensors is based mainly on the relationship of the electrical conductivity of the near-surface layer of the spatial charge of the semiconductor with the charging of its surface due to the adsorption of foreign atoms [13].…”

Section: Introductionmentioning

confidence: 99%

The influence of adsorbed atoms concentration on the temperature coefficient of resonant frequency of the quasi-Rayleigh wave

Seneta¹,

Peleshchak²,

Nesterivskyi³

et al. 2021

Condens. Matter Phys.

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Within the model of self-consistent connection of quasi-Rayleigh wave with adsorbed atoms, a method of constructing a new class of radiometric sensors of the temperature and concentration of adsorbed atoms on the surface acoustic waves is proposed. Based on the developed theory of the dispersion and acoustic mode width of a quasi-Rayleigh wave on the adsorbed surface of monocrystals with a Zinc blende structure, the temperature coefficient of the resonant frequency of the surface acoustic wave is calculated depending on the temperature and on the concentration of adsorbed atoms.

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Section: Introductionmentioning

confidence: 99%