Structure,morphologyandopticalpropertiesofundopedand MN-doped ZnO(1 x)Sx nano-powderspreparedbyprecipitation method

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dc.contributor.authorWako, Ali Halake
dc.contributor.authorDejene, F. B.
dc.contributor.authorOnani, M. O .
dc.contributor.authorKoao, L. F.
dc.contributor.authorMotloung, S. V.
dc.contributor.authorYihunie, M. T.
dc.date.accessioned2016-09-26T13:17:25Z
dc.date.available2016-09-26T13:17:25Z
dc.date.issued2015-08
dc.descriptionTheauthorssendimmensegratitudetotheSouthAfrica'sNa- tionalResearchFoundation(NRF),theUniversityoftheFreeState physicsdepartmentandtheOrganizationfortheProhibitionof ChemicalWeapons(OPCW)forthe financialassistanceforthis study.en_US
dc.description.abstractThe undopedandMn-dopedZnO(1 x)Sx nano-powders weresuccessfullysynthesizedbyprecipitation method withoutusinganycappingagent.Itsstructure,morphology,elementalanalysis,opticaland luminescence propertiesweredeterminedbyscanningelectronmicroscopy(SEM),energy-dispersive X-rayspectroscopy(EDS),UV–vis spectroscopy(UV)andphotoluminescencespectroscopy(PL).Atypical SEM imageoftheun-dopedZnO(1 x)Sx nanoparticles exhibit flake likestructuresthatchangestonearly spherical particleswithMn-doping.TheXRDofundopedandMndopedZnO(1 x)Sx patternrevealsthe formation ofaproductindexedtothehexagonalwurtzitephaseofZnS.Thenanopowdershavecrys- tallite sizesestimatedfromXRDmeasurementswereintherangeof10–20 nm.Allthesamplesshowed absorption maximumofZnO(1 x)Sx at 271nmandhightransmittanceinUVandvisibleregion,re- spectively.TheundopedZnO(1 x)Sx nanoparticles showstrongroom-temperaturephotoluminescence with fouremissionbandscenteringat338nm,384nm,448nmand705nmthatmayoriginatetothe impurity ofZnO(1 x)Sx, existenceofoxiderelateddefects.Thecalculatedbandgapofthenanocrystalline ZnO(1 x)Sx showedablue-shiftwithrespecttotheMn-doping.ThePLspectraoftheMn-dopedsamples exhibitastrongorangeemissionataround594nmattributedtothe 4T1–6A1 transitionoftheMn2þ ions.en_US
dc.identifier.citationPhysicaB480(2016)63–67en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.physb.2015.08.043
dc.identifier.urihttp://hdl.handle.net/123456789/938
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectZinc oxideen_US
dc.subjectPrecipitationen_US
dc.subjectDopingen_US
dc.subjectPhotoluminescenceen_US
dc.subjectNanomaterialsen_US
dc.titleStructure,morphologyandopticalpropertiesofundopedand MN-doped ZnO(1 x)Sx nano-powderspreparedbyprecipitation methoden_US
dc.typeArticleen_US
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