Electrical characteristics of poly(ethylene oxide)-urea complex films

Mi Yeon Cho, Kyoungah Cho, Sangsig Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The electrical characteristics of complex films composed of poly(ethylene oxide) (PEO) and urea as a function of the urea concentration were examined in this study. Moreover, their structural characteristics were also compared. Depending on the urea concentration, the structural phases were classified as PEO+β-phase composite, β-phase+α-phase composites, or α-phase composite+urea. At urea concentrations below ~0.064 M, the β-phase was dominant in the complex film. Moreover, the conductance increased rapidly with an increase in the urea concentration. For urea concentrations ranging from ~0.064 to ~0.25 M, the β-phase was gradually substituted by the α-phase. As the film was composed entirely of the α-phase at urea concentrations greater than ~0.25 M, its conductance was decreased. In this study, the electrical characteristics observed for the different phases are analyzed and discussed.

Original languageEnglish
Pages (from-to)136-138
Number of pages3
JournalTransactions on Electrical and Electronic Materials
Volume13
Issue number3
DOIs
Publication statusPublished - 2012 Jun 1

Keywords

  • Composite film
  • Conductivity
  • PEO-urea complex
  • Phase-transition

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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