Preparation of Silver Nanoparticle with Different Particle Sizes for Low- Temperature Sintering

Abstract

In this study, silver nanoparticles were synthesized by chemical reduction from silver nitrate using different organic compounds as the protecting agent and organic bases as the reaction promoter. The average sizes of the resulting silver nanoparticles were between 3 to 15 nm depending on the type of the protecting agent, which allowed low-temperature sintering of the metal. These suspensions of silver nanoparticles prepared by this method are free from any metal ion contamination and are suitable for use in semiconductor industry. The suspensions will be used to make micro- interconnects in integrated circuits (IC) devices by inkjet printing. Keywords-Silver; Nanoparticles; Suspensions