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Energy bandstructureinvestigationofblueandgreenlightemitting Mg dopedSnO2 nanostructuressynthesizedbycombustionmethod

Junaid, Bushiri M; Shajira, P S; Bini, Nair B; GaneshchandraPrabhu, V (Elsevier, August 14, 2013)

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Abstract:	Tin oxide(SnO2) andMgdoped(2,4,6,and8wt%)SnO2 nanoparticles weresynthesizedbytheself- propagating solutioncombustionsynthesisusingcitricacidasfuel.Thecharacterizationofsampleswas done byX-raydiffractionspectroscopy(XRD),transmissionelectronmicroscopy(TEM),UV–visible spectroscopy,SAEDandphotoluminescence(PL).XRDpatternandTEMstudiesshowthatthe synthesized particlesareofaveragesize30nmandtheyareintetragonalrutilestructureofSnO2. Combined blueandgreenemissionisseenin4wt%MgdopedSnO2 and intensityofbluebandis increased withrespecttoincreaseinMgdopantconcentrationwhichisattributedtoincreasein population ofoxygenvacancies.ThePLemissioninblueandgreenregionisduetothedoublycharged state (Vo 2þ) ofoxygenandtininterstitialdefectsrespectivelyandisexplainedwithanenergyband diagram
Description:	Journal of Luminescence 145(2014)425–429
URI:	http://dyuthi.cusat.ac.in/purl/4559

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