Enhanced dielectric, EMI shielding effectiveness, linear and nonlinear optical properties of CdO/SnO2 nanocomposites

Abstract

In recent days, new advanced nanomaterials are necessary to satisfy the required properties in various electronic and energy applications. This research work concentrates on producing the new nanocomposites with many enhanced electronic and dielectric properties of multifunctional devices. The samples CdO, CdO/SnO2, and PVP capped CdO/SnO2 nanocomposite have been synthesized by microwave irradiation method. The effect of incorporation of SnO2 and PVP with CdO for phase changes, morphological, linear and nonlinear optical properties, LED applications, dielectric properties, and electromagnetic interference shielding efficiency (EMI). XRD phase study confirms that the nanocomposite contains both a cubical structure of CdO and an orthorhombic structure of SnO2. PVP SEM and TEM images show changes in morphology as nanorod in CdO/SnO2/PVP due to heterogeneous nucleation effect and reduction in particle size. PL study reveals that the enrichment of photoluminescence property in CdO/SnO2/PVP nanocomposite due to the incorporation of PVP and SnO2, which produce defects in the lattice. CIE chromaticity diagram represents that the fabricated nanocomposites are suitable in designing a light-emitting diode. Nonlinear refractive index and third-order susceptibility values are more significant in CdO/SnO2/PVP nanocomposite than CdO and CdO/SnO2. The effect of SnO2 and PVP with CdO in dielectric constant, dielectric loss, electrical conductivity, and electromagnetic interference shielding efficiency were discussed. Finally, all present results ensured that the incorporation of SnO2 and PVP with CdO will enhance the optical, electronic and dielectric properties.