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Structural and Characterization of Luminescence Material Sr2SiO4: Eu Phosphor: Literature/Experimental Review |
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PP: 231-236 |
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doi:10.18576/jrna/080306
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Author(s) |
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Rekha Sahu,
N. Kumar Swamy,
R.K. Deshmukh,
Vikas Dubey,
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Abstract |
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| In this paper, comparison made on different Concentrations of Eu as a dopant has been discussed. The influence of structural and luminescence properties on different preparation methods have been reviewed and compared. Amidst Sol-Gel, spray pyrolysis, combustion and solid-state ceramic route methods, the sol-gel method was found to be stable the single phase structure with improved luminescence properties. Eu doped Sr2SiO4 enable material to be a candidate for white light LEDs application. The structure were observed orthorhombic, monoclinic & single phase with different preparation technique. Photoluminescence result shows the excitation spectrum of x=0.1, 0.5, 1.0, 2.5 mol% Eu doped strontium silicate sample with 592 nm emission and Excitation 296 nm, 243 nm emission and Excitation 592 nm, 256 nm emission and Excitation 612 nm, 370 nm emission and Excitation 560 nm. The energy transfer from Eu(I) of a high-energy emitting centre to Eu(II) of a low-energy emitting centre increased as Eu concentration increased, resulting in emission with a long wavelength and also the yellow, yellow-orange, orange-red and blue-shift. |
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