Electrical characteristics of poly(ethylene oxide)-urea complex films
- Authors
- Cho, M.Y.; Cho, K.; Kim, S.
- Issue Date
- 2012
- Keywords
- Composite film; Conductivity; PEO-urea complex; Phase-transition
- Citation
- Transactions on Electrical and Electronic Materials, v.13, no.3, pp.136 - 138
- Indexed
- SCOPUS
KCI
- Journal Title
- Transactions on Electrical and Electronic Materials
- Volume
- 13
- Number
- 3
- Start Page
- 136
- End Page
- 138
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/110706
- DOI
- 10.4313/TEEM.2012.13.3.136
- ISSN
- 1229-7607
- 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. Copyright © 2012 KIEEME. All rights reserved.
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