Tuning the Morphological and Optical Characteristics of SnO2/ZrO2 Nanomaterials Doped PEO for Promising Optoelectronics Applications

In this work, the casting method was utilized to form the PEO/SnO2/ZrO2 nanocomposite to improve its structural and optical characteristics.The formation network path inside the polymeric matrix at the higher concentration of nanoparticles was confirmed by the optical microscope (OM).The nanocomposite of PEO/SnO2/ZrO2 has a higher absorbance in the UV region, which proved from the optical measurements that it can be used as an optoelectronic device.Increasing the concentration of SnO2 and ZrO2 NPs alters several properties.For example, the refractive index, optical conductivity, absorbance, extinction coefficient, and real and imaginary dielectric constants all increase, but the transmittance and energy optical band gap decrease.For the permitted and prohibited indirect transitions separately, the energy gap shrank from 3.68 eV to 3.4 eV and 3.66 eV to 3.35 eV, respectively.The narrowing of the energy band gap is very useful for many fields that work with optical devices.