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Title:
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Energy bandstructureinvestigationofblueandgreenlightemitting Mg dopedSnO2 nanostructuressynthesizedbycombustionmethod |
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Author:
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Junaid, Bushiri M; Shajira, P S; Bini, Nair B; GaneshchandraPrabhu, V
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Abstract:
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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 |
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Description:
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Journal of Luminescence 145(2014)425–429 |
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URI:
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http://dyuthi.cusat.ac.in/purl/4559
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Date:
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2013-08-14 |