Open AccessInfluence of laser radiation on optical properties of high resistivity crystals CdTe and solid solutions Cd1-xZnxTe
Author(s) -
P.O. Gentsar,
S. N. Levytskyi
Publication year - 2020
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.21.1.68-72
Subject(s) - cadmium telluride photovoltaics , materials science , laser , irradiation , optoelectronics , semiconductor , getter , absorption (acoustics) , reflection (computer programming) , wavelength , solid solution , radiation , optics , analytical chemistry (journal) , chemistry , physics , chromatography , nuclear physics , metallurgy , composite material , programming language , computer science
In this paper, the transmission and reflection spectra of single crystals р-CdTe(111) are measured; solid solutions of Cd1-хZnхTe (х=0.1) in the range (0.2 – 1.7)·10-6 m before and after laser irradiation at the wavelength λ = 532 nm in the energy range 66 - 164 mJ/cm2 for CdTe(111) and in the energy range 46.6 mJ/cm2 - 163.5 mJ/cm2 for Cd1-хZnxTe (x = 0.1). It is established that the main mechanism of influence of pulsed laser irradiation on the optical properties of thin surface layers of the investigated crystals is structural gettering, that is, the absorption due to the presence of sections of semiconductors that have a defective structure and have the ability to actively absorb defects and points.