首页|Deciphering the role of rGO in tuning dielectric properties of Er2O3/ZnO/rGO nanocomposites synthesized via facile approach
Deciphering the role of rGO in tuning dielectric properties of Er2O3/ZnO/rGO nanocomposites synthesized via facile approach
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The present research investigated the effect of reduced graphene oxide(rGO)integration with as-synthesized Er2O3/ZnO nanocomposites on dielectric properties.The samples were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM),diffuse reflectance spectroscopy(DRS),and energy dispersive spectroscopy(EDS).Complex impedance spectroscopy was utilized to characterize dielectric relaxation phenomena in Er2O3/ZnO and Er2O3/ZnO/rGO nanocomposites.All the samples exhibit single relaxation phenomena which are ascribed to grain boundaries.The addition of rGO to Er2O3/ZnO nanocomposite results in the enhancement of dielectric response due to increased local field intensity caused by the formation of conducting-insulating interfaces.Furthermore,the AC conductivity of the Er2O3/ZnO/rGO is increased at higher frequencies due to the presence of free charge carriers in rGO.At higher frequencies,Er2O3/ZnO/rGO nanocomposite with increased concentration of ZnO exhibits a more stable dielectric constant with extremely low dielectric loss.Hence,the inclusion of rGO in Er2O3/ZnO nanocomposites makes it a novel prospective candidate in the field of energy storage devices.
Saiqa Hafeez、Saima Perveen、Muhammad Zarrar Khan、Awab Hashmi、Fahad Azad
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School of Natural Sciences(SNS),National University of Sciences and Technology(NUST),Islamabad,Pakistan
Electronic and Magnetic Materials Laboratory,School of Chemical and Materials Engineering(SCME),National University of Sciences and Technology(NUST),Islamabad,Pakistan
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