| 초록 |
Recently metal nanoparticles have received considerable attention due to their applications to bio, optics and electronics. This study was attended to demonstrate synthesis of silver nanoparticles stabilized with polymer and their applicability to printed electronics. Silver nanoparticles were synthesized by reduction of silver nitrate in aqueous solution by N,N-dimethyl formamide in the presence of polyvinyl pyrrolidone (PVP) as a stabilizer. We observed the average particle size of 50 nm at molar ratio of PVP to silver below 8. Silver nanoparticles were redispersed in ethylene glycol at 25 wt% and then were printed on polyimide film (Kapton HN type). The surface of polyimide film was modified by alkaline hydrolysis to improve the adhesion with silver metal. Printed silver patterns were cured in the temperature range between 200 and 300 °C and showed low specific resistance (＜ 10 μΩ·cm ) even at low sintering temperature below 250 °C. |
