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Research Journal of Engineering and Technology
Year : 2016, Volume : 7, Issue : 1
First page : ( 1) Last page : ( 6)
Print ISSN : 0976-2973. Online ISSN : 2321-581X.
Article DOI : 10.5958/2321-581X.2016.00001.5

Energy-Transfer Behavior in Blue Color Ce3+, Eu2+ Activated LaMgAl11O19 Phosphor Prepared by Combustion Synthesis Using Mixed of Fuel Technique

Pathak A. A.1,*, Yadav P.J.2, Joshi C. P.2, Moharil S. V.3

1National Power Training Institute, Western Region, Nagpur, 440022, India

2Department of Physics, Shri Ramdeobaba College of Engineering and Management, Katol Road, Nagpur, 440013, India

3Department of Physics, RTM Nagpur University, Nagpur, 440033, India

*Corresponding Author Email: anuapathak@yahoo.com

Online published on 15 October, 2016.

Abstract

Ce3+and Eu2+ co-doped LaMgAl11O19, hexaaluminate phosphor has been successfully synthesized by one step combustion synthesis method using mixture of two fuels. Photoluminescence excitation and emission spectra are investigated in detail. Ce3+ and Eu2+activated phosphors show emission bands at 350 nm and 445 nm respectively in ultraviolet and blue region. Energy transfer behavior is observed from Ce3+ to Eu2+, which yields intense blue color emission at 445 nm. Concentration Quenching due to dipole-dipole interaction is observed. Maximum intensity of co-doped LaMgAl11O19 phosphor is obtained at 5 mole% of Cerium and 3 mole% of Europium. The CIE chromaticity of LAM: Ce3+, Eu2+ phosphor was compared with the commercial BAM. LaMgAl11O19, rare earth activated phosphor has potential candidate for UV LED, white LED and UV LASERs.

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Keywords

Combustion synthesis, mixed fuel, X-RD and PL, Energy transfer Ce3+-Eu2+, CIE chromaticity of LAM.

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