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Structural characterization of Er 3+ ,Yb 3+ ‐doped Gd 2 O 3 phosphor, synthesized using the solid‐state reaction method, and its luminescence behavior
Author(s) -
Tamrakar Raunak Kumar,
Bisen D. P.,
Brahme Nameeta
Publication year - 2016
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2913
Subject(s) - phosphor , analytical chemistry (journal) , photoluminescence , thermoluminescence , materials science , luminescence , doping , scanning electron microscope , fourier transform infrared spectroscopy , transmission electron microscopy , crystallite , chemistry , optics , optoelectronics , nanotechnology , physics , chromatography , metallurgy , composite material
We report the synthesis and structural characterization of Er 3+ ,Yb 3+ ‐doped Gd 2 O 3 phosphor. The sample was prepared using the conventional solid‐state reaction method, which is the most suitable method for large‐scale production. The prepared phosphor sample was characterized using X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), thermoluminescence (TL), photoluminescence (PL) and CIE techniques. For PL studies, the excitation and emission spectra of Gd 2 O 3 phosphor doped with Er 3+ and Yb 3+ were recorded. The excitation spectrum was recorded at a wavelength of 551 nm and showed an intense peak at 276 nm. The emission spectrum was recorded at 276 nm excitation and showed peaks in all blue, green and red regions, which indicate that the prepared phosphor may act as a single host for white light‐emitting diode (WLED) applications, as verified by International de I'Eclairage (CIE) techniques. From the XRD data, the calculated average crystallite size of Er 3+ and Yb 3+ ‐doped Gd 2 O 3 phosphor is ~ 38 nm. A TL study was carried out for the phosphor using UV irradiation. The TL glow curve was recorded for UV, beta and gamma irradiations, and the kinetic parameters were also calculated. In addition, the trap parameters of the prepared phosphor were also studied using computerized glow curve deconvolution (CGCD). Copyright © 2015 John Wiley & Sons, Ltd.