Dielectric and current-voltage characteristics of flexible Ag/BaTiO3 nanocomposite films processed at near room temperature

Seung Won Kim, Hong Rak Choi, Chan Su Han, Da Bin Kim, Ji Won Kim, Yong Soo Cho

Research output: Contribution to journalArticle

Abstract

High dielectric constant ceramic-polymer composite materials have been produced by thermal-treatment in the range of 160 to 200 °C. Here, we introduce a room temperature process of generating flexible high dielectric constant nanocomposite films on a polymer substrate by combining a printing technique with a UV-curing process. The composite structure is based on nanoscale BaTiO3 and Ag particles dispersed in a UV-cured polymer matrix. Dielectric characteristics of the nanocomposite thick films depended on the volume fraction and particle size of BaTiO3 as well as the content of Ag. As an optimal result, a dielectric constant of ∼300 and a dielectric loss of 0.08 were achieved when ∼81 nm BaTiO3 and ∼34 nm Ag particles were used in a total volume fraction of 56.2%, which are very competitive for flexible capacitive devices. Current-voltage behavior of the nanocomposite films depended largely on the content of Ag content as related to the percolative transition of electrical conduction.

Original languageEnglish
Pages (from-to)56038-56043
Number of pages6
JournalRSC Advances
Volume7
Issue number88
DOIs
Publication statusPublished - 2017 Jan 1

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Nanocomposite films
Current voltage characteristics
Permittivity
Volume fraction
Polymers
Dielectric losses
Composite structures
Polymer matrix
Thick films
Temperature
Curing
Printing
Particle size
Heat treatment
Composite materials
Electric potential
Substrates

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Kim, Seung Won ; Choi, Hong Rak ; Han, Chan Su ; Kim, Da Bin ; Kim, Ji Won ; Cho, Yong Soo. / Dielectric and current-voltage characteristics of flexible Ag/BaTiO3 nanocomposite films processed at near room temperature. In: RSC Advances. 2017 ; Vol. 7, No. 88. pp. 56038-56043.
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Dielectric and current-voltage characteristics of flexible Ag/BaTiO3 nanocomposite films processed at near room temperature. / Kim, Seung Won; Choi, Hong Rak; Han, Chan Su; Kim, Da Bin; Kim, Ji Won; Cho, Yong Soo.

In: RSC Advances, Vol. 7, No. 88, 01.01.2017, p. 56038-56043.

Research output: Contribution to journalArticle

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