Open AccessSynthesis and photoluminescence properties of ultraviolet excited Ba2MgWO6:Sm3+ orange-red phosphors
Author(s) -
Jing Xie,
Xiyan Zhang
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 - 10.1088/1755-1315/639/1/012030
Subject(s) - phosphor , chromaticity , photoluminescence , excited state , orange (colour) , analytical chemistry (journal) , ion , ultraviolet , luminescence , materials science , emission spectrum , excitation , chemistry , spectral line , optoelectronics , optics , atomic physics , physics , organic chemistry , chromatography , astronomy , food science , quantum mechanics
In this work, Sm 3 +-actived Ba 2 MgWO 6 phosphors were prepared through the high temperature solid-state method. The XRD, SEM, photoluminescence spectra and decay curves were surveyed detailly. Under the excitation of 319 nm, the typical Ba 2 MgW0 6 :0.01Sm 3 + phosphor exhibits orange-red emission ranging from 500 to 700 nm with many emission bands ascribed to 4 G 5/2 → 6 H 5/2 (550-600 nm), 4 G 5/2 → 6 H 7/2 (600-640 nm) and 4 G 5/2 → 6 H 9/2 (640-665 nm) transitions of Sm 3 + ion. The phenomenon of concentration quenching and decay curves suggest the existence of energy transfer between Sm 3 + ions, and the CIE chromaticity coordinates displays that all the obtained samples are situated in the region of orange-red. All the consequences manifest that Ba 2 MgWO 6 :Sm 3 + orange-red phosphors possess the potential for the application in the white light emitting diodes.