Terahertz radiation detector based on thermoelectric material Bi$_{88}$Sb$_{12}$

E. S. Makarova^a, A. V. Asach^a, I. L. Tkhorzhevskii^a, A. D. Sedinin^a, D. V. Zykov^a, A. D. Zaitsev^a, P. S. Demchenko^a, M. G. Novoselov^a, V. A. Komarov^b, A. S. Tukmakova^a, A. V. Novotelnova^a, N. S. Kablukova^ac, M. K. Khodzitskii<sup>a

a</sup> ITMO University, 197101 St. Petersburg, Russia
^b Herzen State Pedagogical University of Russia, 191186 St. Petersburg, Russia
^c St. Petersburg State University of Technology and Design, 191186 St. Petersburg, Russia

Abstract: Terahertz radiation is very promising for visualization, detection and data transfer. Searching for sensitive, fast and compact THz detector that operates at room temperature is a common subject for these applications. Hence, there is still an issue of searching for new materials for THz radiation detection. Solid solutions based on thermoelectric bismuth and antimony appear to have significant potential for these applications. In this paper photoresponse of thermoelectric material Bi$_{88}$Sb$_{12}$ has been studied for the first time. Films with thicknesses of 70 and 150 nm were studied under influence of radiation at frequency of 0.14 THz.

Keywords: terahertz radiation, photoresponse, bismuth, antimony, thermoelectric materials, thin films.

Received: 24.09.2021
Revised: 20.11.2021
Accepted: 20.11.2021

DOI: 10.21883/FTP.2022.04.52192.7a

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