Article ID Journal Published Year Pages File Type
5025364 Optik - International Journal for Light and Electron Optics 2017 28 Pages PDF
Abstract
Orange-red emitting europium doped (1-9 mol%) SrTiO3 (ST) nanophosphor was synthesized by solution combustion method using urea as a fuel. The crystallinity and phase formation of the nanophosphor was studied by powder X-ray diffraction (PXRD). The Field- emission scanning electron microscopy (FE-SEM) images are evident for the porous and agglomeration nature for the product. The Fourier transform infrared spectroscopy (FT-IR) indicates the formation of the oxide bonds. The photoluminescence (PL) of SrTiO3:Eu3+ phosphor with different mol% of Eu3+ excited by 395 nm light was studied. The photoluminescence spectra exhibit characteristic luminescence from 5D0 → 7F1,2,3 intra-4f shell Eu3+ ion transitions. An intense orange red emission peak at 615 nm was observed due to electric dipole (5D0 → 7F2) transition. The color purity of the phosphor was confirmed by CIE co-ordinates. The study demonstrates a simple and efficient method for the synthesis of novel nanophosphor with enhanced orange-red emission.
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Physical Sciences and Engineering Engineering Engineering (General)
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