Vacuum thermally evaporated polymeric zinc acrylate as an organic interlayer of organic/inorganic multilayer passivation for flexible organic thin-film transistors
- Authors
- Yun W.M.[Yun W.M.]; Jang J.[Jang J.]; Nam S.[Nam S.]; Jeong Y.J.[Jeong Y.J.]; Kim L.H.[Kim L.H.]; Park S.[Park S.]; Seo S.J.[Seo S.J.]; Park C.E.[Park C.E.]
- Issue Date
- 2012
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, v.22, no.48, pp.25395 - 25401
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY
- Volume
- 22
- Number
- 48
- Start Page
- 25395
- End Page
- 25401
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/63259
- DOI
- 10.1039/c2jm34760a
- ISSN
- 0959-9428
- Abstract
- Polymeric zinc acrylate (pZA) was introduced as an organic interlayer for the inorganic/organic multilayer passivation of flexible organic thin film transistors (OTFTs). The pZA film was deposited by thermally evaporating a zinc diacrylate (ZDA) monomer under high vacuum (<10(-5) Torr) and applying UV irradiation. The conversion of ZDA into a polymeric phase was confirmed by FTIR analysis, breakdown voltage measurements and the photopatternability of the film before and after UV irradiation. Vacuum-thermally evaporated pZA film showed good surface smoothness and a high permeation activation energy (53 kJ mol(-1)) compared to conventional polymeric films. As an interlayer for multilayer passivation, vacuum-thermally evaporated silicon monoxide (SiO) was introduced as the inorganic counterpart of the pZA interlayer. A multilayer film comprising 6.5 pairs of layers showed a water vapor transmission rate (WVTR) of 0.055 g m(-2) per day, a 25-fold improvement over the WVTR of a single SiO film (1.207 g m(-2) per day). OTFTs encapsulated with 6.5 pairs of polymeric zinc acrylate/silicon monoxide layers showed prolonged stability over 97 days. In addition, the passivation layer did not show crack formation, and sustained barrier characteristics, even after 500 bending tests.
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Collections - Graduate School > SKKU Advanced Institute of Nano Technology > 1. Journal Articles
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