Adsorption and electrophysical properties of semiconductors of the InSb-CdS system |
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Authors: | I A Kirovskaya T N Filatova |
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Institution: | 1.Omsk State Technical University,Omsk,Russia |
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Abstract: | Adsorption and the electrophysical properties (changes in electrical conductivity) of thin film solid solutions and binary
components of the new InSb-CdS system are studied by means of piezoquartz microweighing, IR spectroscopy and probe compensation
in the temperature range of 273–353 K and a range of adsorbate gas (NH3, NO2) pressures of 0.2–9.8 Pa. The areas of physical and chemical adsorption accompanied by the charging of the (mostly positive)
surface are determined. The mechanisms and regularities of adsorption as a function of external conditions and composition
of the system are established, and certain similarities and patterns of changes in the adsorption and electroconductivity,
and parallelisms of the “acidbase characteristic-composition,” “adsorption characteristic-composition,” and “electrophysical
characteristics-composition” dependences are described. These prove to be useful in studying the adsorption mechanism and
in identifying the most active components of the system relative to NH3 and NO2, proposed as materials for respective sensors/detectors. |
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