Effect of UV/ozone treatment on interactions between ink-jet printed Cu patterns and polyimide substrates |
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| Authors: | Young-In LeeYong-Sung Goo Kun-Jae LeeYun-Gu Hwang Younghun ByunHee Jung Park Deok-Yong ParkNosang V Myung Yong-Ho Choa |
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| Affiliation: | a Department of Fine Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Koreab Advanced Materials Laboratory, Samsung Advanced Institute of Technology, Yongin 446-712, Republic of Koreac Materials Research Laboratory, Advanced Institute of Technology, Yongin 446-712, Republic of Koread Department of Applied Materials Engineering, Hanbat National University, Daejeon 305-719, Republic of Koreae Department of Chemical and Environmental Engineering and Center for Nanoscale Science and Engineering, University of California-Riverside, Riverside, CA 92521, USA |
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| 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. |
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| Keywords: | UV/ozone Ink-jet printing Wettability Polyimide film Surface modification |
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