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Title: Optical, electrical, thermal properties of cadmium chloride doped PVA – PVP blend

Abstract

Films of polyvinylalcohol (PVA) – polyvinylpyrrolidone (PVP) blend doped with Cadmium Chloride (CdCl{sub 2}) in the doping range 1 wt% to 40 wt% were prepared by solution casting technique. These films were characterized using optical/UV-Vis- NIR spectroscopy, Differential Scanning Calorimetry (DSC) and DC electrical measurements. The UV-Visible spectra were quantitatively analyzed to yield the optical parameters. The UV-Visible Spectra show intermediate absorption bands (before the final absorption edge) due to formation of energy bands in the forbidden gap of PVA-PVP. There is a prominent absorption band at 2.9 eV, from 0.5 wt% up to 1.8 wt% doping level (DL) caused by the dopant (CdCl{sub 2}). The DC electrical studies showed an increase in activation energy from 2.8 eV at 0.5 wt% DL up to 3.5 eV at 4.4 wt% DL, reaching a low of 2.4 eV at 11.2 wt% DL. DSC scans show evidence of formation of chain fragments, at doping levels beyond 8 wt%.

Authors:
; ;  [1]
  1. Department of Physics, Karnatak Science College, Karnatak University, Dharwad-580001 (India)
Publication Date:
OSTI Identifier:
22490382
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; ACTIVATION ENERGY; CADMIUM CHLORIDES; CALORIMETRY; DIRECT CURRENT; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; EV RANGE; FILMS; NEAR INFRARED RADIATION; PVA; PVP; THERMODYNAMIC PROPERTIES; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA

Citation Formats

Baraker, Basavarajeshwari M., Hammannavar, Preeti B., and Lobo, Blaise, E-mail: blaise.lobo@gmail.com. Optical, electrical, thermal properties of cadmium chloride doped PVA – PVP blend. United States: N. p., 2015. Web. doi:10.1063/1.4917901.
Baraker, Basavarajeshwari M., Hammannavar, Preeti B., & Lobo, Blaise, E-mail: blaise.lobo@gmail.com. Optical, electrical, thermal properties of cadmium chloride doped PVA – PVP blend. United States. doi:10.1063/1.4917901.
Baraker, Basavarajeshwari M., Hammannavar, Preeti B., and Lobo, Blaise, E-mail: blaise.lobo@gmail.com. 2015. "Optical, electrical, thermal properties of cadmium chloride doped PVA – PVP blend". United States. doi:10.1063/1.4917901.
@article{osti_22490382,
title = {Optical, electrical, thermal properties of cadmium chloride doped PVA – PVP blend},
author = {Baraker, Basavarajeshwari M. and Hammannavar, Preeti B. and Lobo, Blaise, E-mail: blaise.lobo@gmail.com},
abstractNote = {Films of polyvinylalcohol (PVA) – polyvinylpyrrolidone (PVP) blend doped with Cadmium Chloride (CdCl{sub 2}) in the doping range 1 wt% to 40 wt% were prepared by solution casting technique. These films were characterized using optical/UV-Vis- NIR spectroscopy, Differential Scanning Calorimetry (DSC) and DC electrical measurements. The UV-Visible spectra were quantitatively analyzed to yield the optical parameters. The UV-Visible Spectra show intermediate absorption bands (before the final absorption edge) due to formation of energy bands in the forbidden gap of PVA-PVP. There is a prominent absorption band at 2.9 eV, from 0.5 wt% up to 1.8 wt% doping level (DL) caused by the dopant (CdCl{sub 2}). The DC electrical studies showed an increase in activation energy from 2.8 eV at 0.5 wt% DL up to 3.5 eV at 4.4 wt% DL, reaching a low of 2.4 eV at 11.2 wt% DL. DSC scans show evidence of formation of chain fragments, at doping levels beyond 8 wt%.},
doi = {10.1063/1.4917901},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1665,
place = {United States},
year = 2015,
month = 6
}
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