M. A. Sulimov, M. N. Sarychev, I. A. Mogilnikov, V. Yu. Ivanov, V. A. Volkov, V. D. Zhivulko, A. V. Mudryi, M. V. Yakushev, “Irradiation of Cu(In, Ga)Se<nobr>$_2$</nobr> Thin Films by 10 MeV Electrons at 77 K: Effect on Photoluminescence Spectra”, Fizika i Tekhnika Poluprovodnikov, 2022, Volume 56, Issue 6,Page 546

Spectroscopy, interaction with radiation

Irradiation of Cu(In, Ga)Se$_2$ Thin Films by 10 MeV Electrons at 77 K: Effect on Photoluminescence Spectra

M. A. Sulimov^ab, M. N. Sarychev^b, I. A. Mogilnikov^a, V. Yu. Ivanov^b, V. A. Volkov^b, V. D. Zhivulko^c, A. V. Mudryi^c, M. V. Yakushev^abc

^a Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 620108 Ekaterinburg, Russia
^b Ural Federal University, 620002 Ekaterinburg, Russia
^c Scientific-Practical Material Research Centre of the National Academy of Sciences of Belarus, 220072 Minsk, Belarus

Abstract: Thin films of Cu(In,Ga)Se$_2$ on Mo/glass were irradiated by 10 MeV electrons at 77 K and examined by photoluminescence at 77 K before and after irradiation without warming the samples as well as after warming to 300 K. The photoluminescence spectra revealed a broad band constituting 3 merged peaks (P1, P2, P3) assigned to: band-to-band recombination (P1) and recombination of free electrons with holes localised at acceptors influenced by the valence band tail (P2, P3). Irradiation reduced the intensity of the peaks due to deep traps generated by electrons and anomalously reduced the degree of compensation of the material.

Keywords: thin films, irradiation, photoluminescence, recombination, band-to-band.

Received: 23.02.2022
Revised: 25.03.2022
Accepted: 25.03.2022

Language: English

DOI: 10.21883/ftp.2022.06.52617.9841a