Study of the Fast Sintering of Silver Nanoparticle Ink Induced by Sodium chloride solution at Room Temperature

In this study, a composite citrate-encapsulated AgNP ink was designed and synthesized. The ink was then printed on PET films to create the AgNP patterns by using an inkjet printing method. After that, the AgNP patterns were sprayed by the NaCl solution. Based on the experiments, the excellent sintering performance for AgNP patterns were obtained by NaCl treatment. The Cl- ions were confirmed to be able to partially replace citrates on AgNP surfaces, resulting the agglomeration of AgNPs at room temperature.