Journal of Electronic Materials, volume 54, issue 3, pages 2264-2274
Fluorescence Spectra and Optical Transition Properties of Eu3+-Doped Ca3NbGa3Si2O14 Phosphor
Akshay Pimpalkar
1
,
N.S. Ugemuge
1
,
Ashok A. Mistry
1
,
Shruti Dhale
1
,
Rujuta Barve Joshi
2
,
Sarika A. Khapre
2
,
Milind Patwardhan
3
,
R. Nithya
4
,
K Greeshma
5
,
K M Nissamudeen
5
1
Department of Physics, Anand Niketan College, Anandwan, Warora, India
|
2
D. Y. Patil Institute of Technology, Pune, India
3
Bharati Vidyapeeth’s College of Engineering for Women, Pune, India
|
4
Department of Physics, St. Martin’s Engineering College, Kompally, Secunderabad, India
Publication type: Journal Article
Publication date: 2024-12-29
Journal:
Journal of Electronic Materials
scimago Q2
wos Q3
SJR: 0.439
CiteScore: 4.1
Impact factor: 2.2
ISSN: 03615235, 1543186X
Abstract
A detailed analysis of Eu3+-doped Ca3NbGa3Si2O14 phosphor prepared via the solid-state method is reported. Powder x-ray diffraction (PXRD) confirms the hexagonal system with space group P321 (150). Morphological study validates the morphology and composition of the synthesized phosphor. The photoluminescence (PL) emission spectra reveal a unique red emission at 615 nm, attributed to the5D0 → 7F2 transition. The optimized Eu3+ concentration is found to be 5.0 mol.%. The CIE chromaticity coordinates are found to be (0.58, 0.41). Higher values of Ω4 confirm the highly symmetric environment around the Eu3+ site, lower covalence, and higher ionicity of the Eu–O bond character. The observed quantum efficiency of 33% for the sample with optimized concentration indicates more efficient emission of photons upon excitation, opening up the possibility of its potential use in several optical devices.
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