Patterned Surface with Controllable Wettability for Inkjet Printing of Flexible Printed Electronics

Appropriate control of substrate surface properties prior to inkjet printing could be employed to improve the printing quality of fine resolution structures. In this paper, novel methods to fabricate patterned surfaces with a combination of hydrophilic and hydrophobic properties are investigated. Th...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2014-03, Vol.6 (6), p.4011-4016
Main Authors: Nguyen, Phuong Q. M, Yeo, Lip-Pin, Lok, Boon-Keng, Lam, Yee-Cheong
Format: Article
Language:English
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Summary:Appropriate control of substrate surface properties prior to inkjet printing could be employed to improve the printing quality of fine resolution structures. In this paper, novel methods to fabricate patterned surfaces with a combination of hydrophilic and hydrophobic properties are investigated. The results of inkjet printing of PEDOT/PSS conductive ink on these modified surfaces are presented. Selective wetting was achieved via a two-step hydrophilic–hydrophobic coating of 3-aminopropyl trimethoxysilane (APTMS) and 3M electronic grade chemical respectively on PET surfaces; this was followed by a selective hydrophilic treatment (either atmospheric O2/Ar plasma or UV/ozone surface treatment) with the aid of a Nickel stencil. Hydrophobic regions with water contact angle (WCA) of 105° and superhydrophilic regions with WCA
ISSN:1944-8244
1944-8252
DOI:10.1021/am4054546