The terahertz (THz) frequency range is electromagnetic radiation in the range from 0.1 to 10 THz, which has high potential for use in non-destructive testing and control of the moisture content of objects. For a long time there was no elemental base of elements (receivers, transmitters, modulators, etc.) to work in this range. At the moment, existing detectors are made according to difficult and inaccessible technologies (like as molecular-beam epitaxy). In this paper, terahertz detector based on a thin-film structured thermoelectric material (solid solution of bismuth-antimony with a concentration of antimony of 12%) and copper contacts on a mica substrate was numerically demonstrated.
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