Effect of Hybrid Organic-Inorganic Nanocomposite on Impedance Spectroscopy, Electric Modulus and Photoluminescence Property for Photovoltaics Applications

The aim of the present work is to study impedance, electric modulus and luminescence properties of polymer nanocomposites. Synthesis of hybrid organic-inorganic nanocomposite has been done by wet chemical synthesis method. The water-soluble polymer polyvinyl alcohol has been chemically synthesized to make a composite material with cadmium selenide quantum dots at room temperature. In this paper, we examine photoluminescence spectra of CdSe/PVA nanocomposite solar cell, based on the absorber layer fabricated by spin coating synthesis route. The surface morphology of synthesized polymer nanocomposite film is studied by using scanning electron microscopy. Photoluminescence study shows the presence of quantum confinement effect in CdSe//PVA nanocomposite. An analysis of real and imaginary part of impedance measurement in frequency window 42 Hz to 5 MHz and temperature range 298 K to 523 K has been performed. This study reveals the polydispersive nature of the relaxation time of the material. Electric modulus study shows deviation from Debye behaviour as moving towards high frequency. CdSe/PVA nanocomposite is used to design a solar cell. Polymer nanocomposite layer is used as an active layer during the fabrication of a solar cell.