Freestanding Ag sub(2)S/CuS PVA films with improved dielectric properties for organic electronics

The prime goal of this work is to synthesize free-standing polyvinyl alcohol (PVA) films doped with Ag sub(2)S, CuS, Ag sub(2)S/CuS alloy, and Ag sub(2)S/CuS nanocomposites through the sol-gel route. The dependence of Ag sub(2)S content in the PVA nanocomposite films on both the real and imaginary p...

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Published inJournal of applied polymer science Vol. 133; no. 25; p. np
Main Authors Aippunny, Ann Mary K, Shamsudeen, Sajna M, Valparambil, Prakashan, Mathew, Siby, Vishwambharan, Unnikrishnan N
Format Journal Article
LanguageEnglish
Published 01.07.2016
Subjects
Capacitors
Complex permittivity
Dielectric constant
Electronics
Mathematical analysis
Nanocomposites
Nanoparticles
Polyvinyl alcohols
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Summary:The prime goal of this work is to synthesize free-standing polyvinyl alcohol (PVA) films doped with Ag sub(2)S, CuS, Ag sub(2)S/CuS alloy, and Ag sub(2)S/CuS nanocomposites through the sol-gel route. The dependence of Ag sub(2)S content in the PVA nanocomposite films on both the real and imaginary parts of the complex permittivity and loss tangent values was examined. An enhanced dielectric constant was achieved with minimum dielectric loss due to the insulating silica layer. By changing the Ag sub(2)S content in Ag sub(2)S/CuS PVA films, the AC conductivity is improved with pure Ag sub(2)S nanoparticles exhibiting highest values of the order of 10 super(-6)-10 super(-9) S/cm. The Cole-Cole parameters were calculated and the semicircles observed in the plots indicate a single relaxation process. The results suggest that these composite films are potential materials for embedded capacitor applications. J. Appl. Polym. Sci. 2016, 133, 43568.
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ISSN:0021-8995
1097-4628
DOI:10.1002/app.43568