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http://dx.doi.org/10.7735/ksmte.2015.24.1.094

A Study of the Yellowing Phenomenon in the Laser Patterning of Silver Nanowire  

Hwang, June Sik (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Park, Jong Eun (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Yang, Min Yang (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.24, no.1, 2015 , pp. 94-97 More about this Journal
Abstract
In this study, we introduce a yellowing phenomenon in silver nanowire laser patterning and attempt to understand the cause of this phenomenon. Silver nanowire is a promising alternative to indium tin oxide as a transparent electrode owing to its flexibility. Additionally, silver nanowire can be easily patterned by laser ablation, which is free of dangerous chemicals. However, a yellowish color change reducing visibility is observed on the patterned area of the silver nanowires, and this yellowing phenomenon prevents the use of silver nanowire as a transparent electrode material. We concluded that resolidified debris of melted and evaporated silver nanowires after laser ablation causes the color change of the electrode. Further research is needed to determine a means of mitigating this yellowing phenomenon.
Keywords
Transparent electrode; Silver nanowire; Laser ablation; Patterning; Yellowing; Re-solidification;
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