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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Investigations on the effect of complexation of NaF salt with polymer blend (PEO/PVP) electrolytes on ionic conductivity and optical energy band gaps
Physica B: Condensed Matter, Volume 406, No. 9, Year 2011
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Description
Sodium ion conducting polymer blend electrolyte films, based on polyethylene oxide (PEO) and polyvinyl pyrrolidone (PVP) complexed with NaF salt, were prepared using solution casting technique. The complexation of the salt with the polymer blend was confirmed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and UVvis spectroscopy. Electrical conductivity of the films was measured with impedance analyzer in the frequency range of 1 Hz to 1 MHz and in the temperature range of 303348 K. It was observed that the magnitude of conductivity increased with the increase in the salt concentration as well as the temperature. UVvis absorption spectra in wavelength region of 200800 nm were used to evaluate the optical properties like direct and indirect optical energy band gaps, optical absorption edge. The optical band gaps decreased with the increase in Na ion concentration. This suggests that NaF, as a dopant, is a good choice to improve the electrical properties of PEO/PVP polymer blend electrolytes. © 2011 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Bhavani, Sridhar
India, Tirupati
Sri Venkateswara University
Statistics
Citations: 213
Authors: 1
Affiliations: 2
Identifiers
Doi:
10.1016/j.physb.2011.02.010
ISSN:
09214526