Open AccessStructural and optical properties of chromium doped zinc gallate long persistent phosphor prepared by surfactant assisted hydrothermal method
Author(s) -
Puja Kumari,
Amba Mondal,
Anil K. Choudhary,
Deepak K. S. Ambast
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1913/1/012039
Subject(s) - phosphor , hydrothermal circulation , analytical chemistry (journal) , materials science , afterglow , photoluminescence , doping , fourier transform infrared spectroscopy , pulmonary surfactant , band gap , luminescence , tetragonal crystal system , nuclear chemistry , phase (matter) , chemistry , chemical engineering , physics , optics , optoelectronics , biochemistry , gamma ray burst , chromatography , organic chemistry , astronomy , engineering
Herein, CTAB surfactant aided hydrothermal reaction was carried for preparing Cr 3+ doped ZnGa 2 O 4 . Urea was used as fuel to continue the reaction. By fixing Cr 3+ ions conc. to 0.5 mol%, the molar ratio of CTAB was varied. We used XRD, TEM, FTIR, PL, UV-VIS spectroscopy, decay kinetics, and afterglow decay experiments to characterize the samples. XRD data suggested a cubic phase matching with JCPDS card no. 00-038-1240. TEM images confirmed the formation of nanoparticles within the range 20-80 nm. The estimated band gap was around 4.8 eV. Excited by 227 nm UV lights elaborated a wide emission band extended from 600 to 800 nm and peaking at 696 nm. The afterglow decay curve showed a long persistent signal up to 1 hour after ceasing offthe excitation source.