Paper Title :Luminescence Studies Of Rare Earth (Europium) Doped Nano-Crystalline Strontium Aluminate Materials (Sra2o4:Eu2+)
Author :Belekar R. M., Sawadh P. S., Mahadule R. K., Theng P. A.
Article Citation :Belekar R. M. ,Sawadh P. S. ,Mahadule R. K. ,Theng P. A. ,
(2015 ) " Luminescence Studies Of Rare Earth (Europium) Doped Nano-Crystalline Strontium Aluminate Materials (Sra2o4:Eu2+) " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 163-166,
Special Issue-1
Abstract : In the present work we have prepared
nano-crystalline rare earth doped strontium aluminate
as Sr1-xEuxAl2O4, (with x = 0.01, 0.02 & 0.03) via sol
gel auto combustion technique. The homogeneity,
structure as well as UV-excitation and persistent
luminescence of the materials was investigated by X-
ray powder diffraction, SEM microscopy as well as
by steady state luminescence spectroscopy and
persistent luminescence decay curves, respectively.
The morphology of the materials at high temperatures
indicated important aggregation due to sintering. The
luminescence decay of the quite narrow Eu2+
band at
ca. 525 nm shows the presence of persistent
luminescence after UV irradiation. The dopant (Eu2+
)
concentrations affect the crystallinity and
luminescence properties of the materials. The present
work reports the changes made in the combustion
process to achieve the homogenous incorporation of
dopants and large-scale production of the
nanophosphor in a short interval of time.
Keywords: Luminescence, nano-alumina, phosphor
Type : Research paper
Published : Special Issue-1
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-2451
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Published on 2015-06-20 |
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