Effect of UV/ozone treatment on interactions between ink-jet printed Cu patterns and polyimide substrates

  • Young In Lee
  • , Yong Sung Goo
  • , Kun Jae Lee
  • , Yun Gu Hwang
  • , Younghun Byun
  • , Hee Jung Park
  • , Deok Yong Park
  • , Nosang V. Myung
  • , Yong Ho Choa

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

In this study, we apply UV/ozone treatment to modify the surface properties of polyimide substrate and investigate the effects of UV/ozone treatment on surface properties of polyimide and the morphologies of ink-jet printed Cu patterns. Wettability of polyimide surface is enhanced by UV/ozone treatment as confirmed by contact angle analysis and XPS results. The change in wettability affected droplet sizes and morphologies of ink-jet-printed lines. The average droplet size increased from 26.8 μm on untreated polyimide to 42.5 μm after UV/ozone treatment. Furthermore, irregular patterns of coexisting beads and short lines were observed in untreated polyimide film, despite minimal overlap of dots. In contrast, patterns that were ink-jet printed on polyimide film that was modified by UV/ozone for 1 h showed continuous lines with straight edges.

Original languageEnglish
Pages (from-to)6853-6857
Number of pages5
JournalThin Solid Films
Volume519
Issue number20
DOIs
StatePublished - 1 Aug 2011

Keywords

  • Ink-jet printing
  • Polyimide film
  • Surface modification
  • UV/ozone
  • Wettability

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