The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol
Solid polymer electrolytes based on polyvinyl alcohol (PVA) complexed with different amounts of sodium chloride (NaCl) (0.1, 0.2, 0.3, 0.4 and 0.5 g) were prepared using solution cast method. The effect of NaCl dopant amount on the optical properties was characterized using UV-Vis spectroscopy. Abso...
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doaj-607689fd3b9d40439a09f6fadfb4f9092020-11-25T02:12:14ZengAIMS PressAIMS Materials Science2372-04842018-06-015353354210.3934/matersci.2018.3.533matersci-05-03-533The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcoholAbdullah Ahmed Ali Ahmed0Abdullah Mohammed Al-Hussam1Abdu Mohammed Abdulwahab2Ahmed Nasser Ahmed Ali Ahmed3Department of Physics, Faculty of Applied Science, Thamar University, Dhamar 87246, YemenDepartment of Chemistry, Faculty of Applied Science, Thamar University, Dhamar 87246, YemenDepartment of Physics, Faculty of Applied Science, Thamar University, Dhamar 87246, YemenDepartment of Chemistry, Faculty of Applied Science, Thamar University, Dhamar 87246, YemenSolid polymer electrolytes based on polyvinyl alcohol (PVA) complexed with different amounts of sodium chloride (NaCl) (0.1, 0.2, 0.3, 0.4 and 0.5 g) were prepared using solution cast method. The effect of NaCl dopant amount on the optical properties was characterized using UV-Vis spectroscopy. Absorbance spectra, direct and indirect optical band gap energies of PVA/NaCl samples were studied. These band gap energies decreased as NaCl amount in PVA matrix increased. The Urbach energy of samples was also calculated using the Urbach relation which increased significantly as the NaCl amount increased due to the increase in the disorder of the polymer occurred by doping. The electrical conductivity of PVA/NaCl electrolyte samples has been estimated by DC conductivity as function in the NaCl amount at room temperature. DC conductivity of prepared electrolytes containing different amounts of NaCl salt increased from 2.06 × 10<sup>−2</sup> S/m at doped amount 0.1 g of NaCl to 4.60 × 10<sup>−2</sup> S/m at doped amount 0.5 g of NaCl. This increasing was due to the increase in the degree of conjugation of π-orbitals, thus, the increase in the polarons amount in PVA matrix.http://www.aimspress.com/Materials/article/2044/fulltext.htmlPVANaCloptical band gapUrbach energyDC conductivity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Abdullah Ahmed Ali Ahmed Abdullah Mohammed Al-Hussam Abdu Mohammed Abdulwahab Ahmed Nasser Ahmed Ali Ahmed |
spellingShingle |
Abdullah Ahmed Ali Ahmed Abdullah Mohammed Al-Hussam Abdu Mohammed Abdulwahab Ahmed Nasser Ahmed Ali Ahmed The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol AIMS Materials Science PVA NaCl optical band gap Urbach energy DC conductivity |
author_facet |
Abdullah Ahmed Ali Ahmed Abdullah Mohammed Al-Hussam Abdu Mohammed Abdulwahab Ahmed Nasser Ahmed Ali Ahmed |
author_sort |
Abdullah Ahmed Ali Ahmed |
title |
The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol |
title_short |
The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol |
title_full |
The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol |
title_fullStr |
The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol |
title_full_unstemmed |
The impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol |
title_sort |
impact of sodium chloride as dopant on optical and electrical properties of polyvinyl alcohol |
publisher |
AIMS Press |
series |
AIMS Materials Science |
issn |
2372-0484 |
publishDate |
2018-06-01 |
description |
Solid polymer electrolytes based on polyvinyl alcohol (PVA) complexed with different amounts of sodium chloride (NaCl) (0.1, 0.2, 0.3, 0.4 and 0.5 g) were prepared using solution cast method. The effect of NaCl dopant amount on the optical properties was characterized using UV-Vis spectroscopy. Absorbance spectra, direct and indirect optical band gap energies of PVA/NaCl samples were studied. These band gap energies decreased as NaCl amount in PVA matrix increased. The Urbach energy of samples was also calculated using the Urbach relation which increased significantly as the NaCl amount increased due to the increase in the disorder of the polymer occurred by doping. The electrical conductivity of PVA/NaCl electrolyte samples has been estimated by DC conductivity as function in the NaCl amount at room temperature. DC conductivity of prepared electrolytes containing different amounts of NaCl salt increased from 2.06 × 10<sup>−2</sup> S/m at doped amount 0.1 g of NaCl to 4.60 × 10<sup>−2</sup> S/m at doped amount 0.5 g of NaCl. This increasing was due to the increase in the degree of conjugation of π-orbitals, thus, the increase in the polarons amount in PVA matrix. |
topic |
PVA NaCl optical band gap Urbach energy DC conductivity |
url |
http://www.aimspress.com/Materials/article/2044/fulltext.html |
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