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http://dx.doi.org/10.4191/kcers.2012.49.5.417

Investigation of Dispersion Stability of Conductive Nano Ink Using 1-Octanethiol Coated Copper Nano Powders  

Cho, Danee (Department of Materials Engineering, Hanyang University)
Baik, Jong-Hwan (Lean on Tech.)
Park, Joong-Hark (Nano Technology Inc.)
Lee, Caroline Sunyong (Department of Materials Engineering, Hanyang University)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.5, 2012 , pp. 417-422 More about this Journal
Abstract
Copper nano particles have been considered as the materials for conductive ink due to its good thermal, electrical conductivity and low cost. However, copper nanoparticles oxidize easily, decreasing dispersion stability and electrical conductivity. Therefore, it is important to develop a method to minimize oxidation of copper nano particles to improve its dispersion stability property in copper nano ink. In this study, copper nano particles were coated with 1-Octanethiol VSAM(Vaporized Self Assembled Multilayers) to prevent oxidation and coated copper powders were dispersed in conductive ink successfully by studying its relationship of different chain length of solvents to 1-Octanethiol coating layer to fabricate nano ink. Various alcohol solvents, such as 1-Hexanol, 1-Octanol, and 1-Decanol were used. The coating layer was observed using FESEM and TEM. Furthermore, dispersion of copper nano particles in nano inks, was characterized using Turbiscan analyzer, viscometer, and contact angle measurement tool.
Keywords
1-Octanethiol; Cu; Dispersion; Conductive ink; Inkjet printing;
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Times Cited By KSCI : 1  (Citation Analysis)
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