Open AccessLuminescence properties of Li+/Mg2+-doped Cr3+: ZrSiO4
Author(s) -
Shaobo Zhang,
Qiuhong Yang,
Jingwei Hu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/769/2/022068
Subject(s) - luminescence , analytical chemistry (journal) , diffractometer , photoluminescence , zirconium , materials science , emission spectrum , ion , doping , quenching (fluorescence) , crystal structure , fluorescence , nuclear chemistry , crystallography , spectral line , chemistry , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , astronomy , metallurgy
Cr 3+ : ZrSiO 4 ceramics with different concentrations of Cr 3+ -doped were prepared by a simple solid-state reaction method, and the effect of Cr 3+ concentration on the photoluminescence of ZrSiO 4 samples was investigated. The X-ray powder diffractometer (XRD) was used to analyze the structural characteristics of the samples. The XRD results show that zirconium silicate has been completely synthesized at 1400°C, which indicates that Cr 3+ enters into the lattice of ZrSiO 4 , but does not change the structure of it. The emission spectra of ZrSiO 4 were measured by the fluorescence spectrometer. The strongest emission peak was at 689nm, which was attributed by the 2 E- 4 A 2 of Cr 3+ . The influence of different concentrations of Cr 3+ on the luminescence of zirconium silicate was investigated. When the concentration of Cr 3+ is 0.1mol%, the luminescence intensity of the samples is the highest. When the concentration of Cr 3+ is 0.5mol%, the intensity of the emission spectrum decreases, which is due to the concentration quenching of Cr 3+ in the crystal lattice. Finally, the influence of charge compensator ions on the emission intensity of the sample is explored. The results show that the emission intensity of the zirconium silicate samples is improved when the appropriate amount of Li ion is added.