A. V. Ikonnikov, V. S. Dudin, A. I. Artamkin, A. N. Akimov, A. E. Klimov, O. E. Tereshchenko, L. I. Ryabova, D. R. Khokhlov, “Optical and transport properties of epitaxial Pb$_{0.74}$Sn$_{0.26}$Te(In) films with a modifiable surface”, Fizika i Tekhnika Poluprovodnikov, 2020, Volume 54, Issue 9,Pages 896

This article is cited in 4 papers

XXIV International symposium Nanophysics and nanoelectronics, Nizhny Novgorod, march 10-13, 2020

Optical and transport properties of epitaxial Pb$_{0.74}$Sn$_{0.26}$Te(In) films with a modifiable surface

A. V. Ikonnikov^a, V. S. Dudin^a, A. I. Artamkin^a, A. N. Akimov^b, A. E. Klimov^bc, O. E. Tereshchenko^bd, L. I. Ryabova^a, D. R. Khokhlov^ae

^a Lomonosov Moscow State University
^b Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^c Novosibirsk State Technical University
^d Novosibirsk State University
^e P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow

Abstract: The results of studies of the optical and transport properties of epitaxial Pb$_{0.74}$Sn$_{0.26}$Te(In) films with a differently treated surface are presented. A comparative analysis of the results makes it possible to establish that the characteristic features of the photoconductivity spectra are defined by processes in the bulk while the surface states have practically no effect on the spectra. At the same time, the photoresponse kinetics and the rate of relaxation processes are heavily dependent on the state of the surface. The characteristic relaxation times of nonequilibrium charge carriers (about several milliseconds) are such that it is possible to use the methods of standard Fourier-transform spectroscopy to characterize optical transitions in the bulk.

Keywords: photoconductivity, relaxation kinetics, surface states, PbSnTe.

Received: 15.04.2020
Revised: 21.04.2020
Accepted: 21.04.2020

DOI: 10.21883/FTP.2020.09.49828.20