Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/1331
Title: Improvement of the red emission of Ag<sup>+</sup>/Mn<sup>2+</sup> co-doped NaMg(PO<inf>3</inf>)<inf>3</inf> crystallized phosphors for possible application in UV-LEDs
Authors: El Abiad, Abdelaziz
Hami, Wafa
Labbilta, Tariq
Aouad, Hakima
Stojadinović, Stevan 
Keywords: Ag / Mn luminescence + 2+;Energy transfer;Phosphate materials;Red emission
Issue Date: 1-Jul-2023
Journal: Journal of Solid State Chemistry
Abstract: 
NaMg(PO3)3 phosphates co-doped with Mn2+/Ag+ were prepared using the solid-state method at a temperature of 600 °C. X-ray diffraction analysis revealed the existence of a continuous solid solution during the substitution of Mg2+ by Mn2+ ions, confirmed by Vegard's law. Morphological studies reveal the presence of microcrystalline aggregates with sub-spherical crystal shapes displaying multiple growth steps reflecting the synthesis conditions and the shape of natural phosphates. The optical properties of samples were evaluated using UV–visible–Near InfraRed and photoluminescence spectroscopy. Four emission bands around 393, 418, 530, and 630 nm were observed and attributed to isolated Ag+ ions, Ag+-Ag0 pairs, Ag+-Ag+ pairs, and Mn2+ ions, respectively. An energy transfer mechanism is identified from the Ag + to Mn2+ and the red emission of Mn2+ was greatly enhanced under excitation at 255 nm of isolated Ag+ ions, which was confirmed by the luminescence spectra. These results indicate that NaMg(PO3)3 doped with 10 mol% Ag+ and 70 mol % Mn2+ could be a promising candidate for UV-LEDs emitting in the range between 200 and 300 nm.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/1331
ISSN: 00224596
DOI: 10.1016/j.jssc.2023.124062
Appears in Collections:Journal Article

Show full item record

SCOPUSTM   
Citations

1
checked on Nov 15, 2024

Page view(s)

19
checked on Nov 21, 2024

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.