Open AccessОпределение некоторых параметров фотолюминесценции соединения Ca(Al-=SUB=-x-=/SUB=-Ga-=SUB=-1-x-=/SUB=-)-=SUB=-2-=/SUB=-S-=SUB=-4-=/SUB=- : Eu-=SUP=-2+-=/SUP=-
Author(s) -
E. G. Asadov,
Г.С. Гаджиева,
A. I. Mamedov,
F. A. Kazymova,
Т.Ш. Ибрагимова,
K. O. Tagiev
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.03.47266.17251
Subject(s) - photoluminescence , europium , luminescence , ion , analytical chemistry (journal) , spectral line , photoluminescence excitation , stokes shift , redshift , materials science , excitation , solid solution , atomic physics , crystallography , chemistry , physics , optoelectronics , astrophysics , metallurgy , organic chemistry , chromatography , quantum mechanics , astronomy , galaxy
We synthesized a solid solution of Ca(Al_ x Ga_1 – x )_2S_4 activated with europium ions Eu^2+. The photoluminescence spectra and photoluminescence excitation spectra of the crystals at 300 K for x = 0.2 are measured. The dependence of the luminescence intensity on the temperature in the range of 10–300 K is investigated. Based on the experimental results, the redshift, the Stokes shift, the activation energy, and the lifetime of the Eu^2+ ions are determined.