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ZnAl 2 O 4 :Eu novel phosphor: SEM and mechanoluminescence characterization synthesized by solution combustion technique
Author(s) -
Satapathy Kabita K.,
Mishra G. C.,
Khan F.
Publication year - 2015
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2786
Subject(s) - mechanoluminescence , phosphor , analytical chemistry (journal) , materials science , doping , combustion , piston (optics) , thermoluminescence , emission spectrum , luminescence , chemistry , spectral line , optics , optoelectronics , physics , wavefront , chromatography , organic chemistry , astronomy
Eu doped ZnAl 2 O 4 phosphors were synthesized by the solution combustion technique using carbohydrazide as a fuel. Mechanoluminescence (ML) was excited impulsively by dropping a piston of 0.7 kg onto the phosphors. Two distinct peaks were observed in the ML glow curve of the γ‐ray irradiated ZnAl 2 O 4 :Eu phosphors. Dependence of ML on various parameters as impact velocity of the piston dropped on to it, mass of the sample, gamma ray doses given to the sample and ML spectra have been studied. ML emission spectrum showed the characteristic emission of Eu 3+ ion in this system. ML is observed to be optimum for the sample having 0.2 mol% of Eu in the ZnAl 2 O 4 phosphor. XRD result confirms formation of the phosphors. SEM characterization shows its surface morphology. This novel phosphor may be a potential candidate for dosimetric use due to its linear dose response. Copyright © 2014 John Wiley & Sons, Ltd.