[6p-A413-1~18] 12.1 Fabrications and Structure Controls

[6p-A413-7] Effect of Disperse Medium Composition on Dispersion Stability of Self-Sintering Silver Nanometal Ink

〇(M1)Yuya Hirakawa^1,2, Keisuke Aoshima¹, Shinya Sugisawa², Shunto Arai¹, Tatsuo Hasegawa^1,2 (1.Tokyo Univ., 2.AIST-FLEC)

Keywords:Ag colloids, printed electrode

Recently we developed a new high-resolution silver electrodes printing process SuPR-NaP, in which dispersion of Ag nanocolloids protected mainly by alkylamines (Ag nanoink) is used. In this process, it is important that Ag nanoink is stable before coating and destabilized right after coating by pattern surface which chemisorb Ag nanocolloids to form electrodes. But its mechanism has still been unclear. This Ag nanoink is stable only in mixed solvent of certain composition, so solvent is thought to contribute to destabilization of Ag nanoink. I will report there is big difference in Ag nanoparticles’ size in Ag nanoink and electrodes obtained by SuPR-NaP process between Ag nanoinks of different composition solvent.