Optical and dielectric modulus Study of PPy-DBSA/Y 2 O 3 composites

Polypyrrole (PPy) conducting polymer was prepared via oxidative polymerization of pyrrole monomers and the existence of oxidant such as ammonium persulphate (APS). Subsequently, similar method was adopted to get doped polypyrrole and its PPy-DBSA-Y2O3 composites. The phase of the prepared materials was elucidated using X-ray diffraction. The SEM/EDX analysis confirmed the dual phase structure of platelet and flakier shape in PPy-DBSA-Y2O3 composite and the presence of yttrium oxide. The UV–Vis as well as photoluminescence band show various electronic levels present in PPy-DBSA-Y2O3 composites. Synthesis of PPy-DBSA-Y2O3 composite with a large real dielectric modulus and lower optical band gap is appropriate semiconductor material for optoelectronic devices applications.