Open AccessФотолюминесценция и особенности дефектной структуры конгруэнтных и близких к стехиометрическому составу кристаллов ниобата лития, полученных по разным технологиям
Author(s) -
Н. В. Сидоров,
Михаил Владимирович Смирнов,
Н.А. Теплякова,
М. Н. Палатников
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/os.2020.05.49324.333-19
Subject(s) - stoichiometry , luminescence , photoluminescence , materials science , crystal (programming language) , lithium niobate , crystallographic defect , lithium (medication) , intensity (physics) , mineralogy , crystallography , optics , optoelectronics , chemistry , physics , computer science , psychology , programming language , psychiatry
Photoluminescence was studied in the volume of congruent and near-stoichiometric lithium niobate crystals obtained by different technologies. Luminescence intensity in near-stoichiometric crystals was found to be lower than that in a congruent crystal. We have shown that not only basic centers (caused by point defects NbLi, VLi) contribute to luminescence, but also complex defects caused by existence of OH-groups.