Investigation of key physical properties of new La@PbS filled Poly (vinyl and pyrrolidone) nanocomposite filmsforopto-electronics

Faculty Science Year: 2023
Type of Publication: ZU Hosted Pages:
Authors:
Yasmin Khairy Abdel Fattah Ahmed
Journal: Physica Scripta IOP Volume:
Keywords : Investigation , , physical properties , , La@PbS filled Poly    
Abstract:
Polymerblendsincorporatedwithvariousnanoparticlesarethekeycomponentsforobtainingnew andadvancedphysicalpropertiesforawideareaofapplications.Herein,poly(vinylandpyrrolidone) blendfilmscontainingdifferentcontentofLa@PbSnanoparticlesarewellpreparedbyfollowingthe casting procedure.La-dopedPbSnanoparticleswerefacilesynthesizedviaachemicalrouteatlow temperatures.ThestructureofcompositionswasinvestigatedthroughXRD,TEM,AFM,andFTIR. UV–visiblespectroscopyshowsthattheabsorptionedgeisredshiftedtoahigherwavelengthandthe absorbanceincreaseswiththeLa@PbScontent.Thedirectandindirecttransitionsinthehybrid nanocomposites(HNCs)arereducedastheinfluenceoffillingpercentage.Tauc’smodelandquantum theoryconfirmedthepresenceofdirectopticalbandgaptransitionsintheHNCfilms.Urbachenergy (Eu) andrefractiveindexwerealsocalculated.ThroughWemple–DiDomenico’s(WDD)modelof single-oscillator the optical susceptibilities and nonlinear refractive index wereestimated.The dielectric constant andelectricalconductivity oftheHNCfilmsareinfluencednotonlybyfrequency butalsobytheLa@PbSpercentage.Thedominantmechanisminallfilmsisrelatedtobarrierhopping (CBH)andfollowsJonscher’spower(JP)performance.
    
     
 
       

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