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Characterization And Photoluminescence Of Sr2CeO4: Eu+3, La+3

Ch. Atchyutha Rao, Poornachandra Rao V. Nannapaneni, K. V. R. Murthy

Volume 4, Issue 3, Page 207-212, Year 2013 | DOI: 10.5185/amlett.2012.7395

Keywords: Phosphor; solid state reaction; X-ray diffraction; photoluminescence; SEM; CIE; particle size analysis.

Abstract: 

In this paper we report the synthesis and luminescence of strontium cerium oxide (Sr2CeO4:Eu3+(0.5mol%),La3+ (0.5mol%) prepared by solid state reaction method in air at 12000C.These samples were characterized by X-ray diffraction, scanning electron microscope (SEM) and photoluminescence (PL) techniques, particle size analysis. The photo luminescence (PL) spectra of pure and Eu3+, La3+ codoped Sr2CeO4 were recorded at room temperature. Sr2CeO4 phosphor was effectively excited around 250 nm and observed a broad emission band peak around 467 nm. XRD data revealed that the structure of Sr2CeO4 is orthorhombic, and the mean crystallite size of Sr2CeO4 and Sr2CeO4: Eu3+, La3+ were 9 nm and 11nm respectively. The colour co-ordinates of Sr2CeO4 were x = 0.16 and y = 0.18 and CIE co-ordinates revealed that the present phosphors may be used in white light applications. Copyright © 2013 VBRI press.

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