Preparation of aqueous Ag Ink with long-term dispersion stability and its inkjet printing for fabricating conductive tracks on a polyimide film

作者：Jeong Sunho^*; SOng Hae Chun; Lee Won Woo; Choi Youngmin; Ryu Beyong Hwan

来源：Journal of Applied Physics, 2010, 108(10): 102805.

DOI：10.1063/1.3511686

We synthesized silver nanoparticles via chemical reduction method in aqueous medium and poly(acrylic acid) sodium salt (PAA), a kind of anionic polyelectrolyte, was used as a capping agent as well as a dispersant. Owing to the electrosteric repulsion characteristic of PAA, the prepared aqueous Ag ink exhibited a remarkable dispersion stability, which was confirmed by sedimentation test, zeta-potential measurement, and rheological analysis. We fabricated narrow conductive features onto the polyimide substrate using ink-jet printing method and demonstrated the influence of substrate temperature on the morphology of printed patterns. After annealing at 250 degrees C, the resistivity of the Ag pattern with a linewidth of 60 mu m was 4 mu Omega cm.

• 出版日期2010-11-15