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  Scopus ID: 21100926589

Modification of Optical Parameters of Solid Polymer Electrolyte Films for Optoelectronic Device Applications

Sunil Kumar and Sannappa J

Abstract

In this work, a time saving, and economical solution cast approach was applied to make solid polymer electrolyte films using hydroxypropyl methylcellulose and sodium bromide. A range of techniques was used to characterize the films, such as Ultraviolet–Visible (UV-Vis) spectroscopy and X-ray diffraction (XRD). The optical factors like refractive index (n), dielectric properties including real and imaginary parts (ε1 ε2), optical conductivity and extinction coefficient were investigated.

The absorption edge (Ee) was relocated with increase of salt to a province of lower photonic energy. This caused the rapid decrease of direct and indirect optical bandwidth gaps from 5.59 to 2.57 eV and 4.61 to 2.44 eV. The optical dielectric loss approach was successfully adopted as a stand-in method for determining the optical band gap. The optical dielectric constant variation with change in optical band gap verified Penn’s model. The XRD spectra was used to examine the structural variation, the extent of interaction was evidenced by the relatively wide amorphous phase of the HPMC polymer with an increase of the NaBr salt. Finally, Tauc’s approach was used to specify different kinds of electrical transitions within the polymer matrix. The solid polymer electrolyte with an expanded amorphous percentage is key factor for application in optoelectronic devices.

Published on: February 20, 2023
doi: 10.17756/nwj.2023-111
Citation: Kumar S, Sannappa J. 2023. Modification of Optical Parameters of Solid Polymer Electrolyte Films for Optoelectronic Device Applications. NanoWorld J 9(1): 8-14.

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