Green synthesis of dendritic silver nanostructure and its application in conductive ink

In this work, dendritic silver nanostructure (DSN) was synthesized via a novel and eco-friendly method. The effects of the dosage of clove oil, concentration of silver nitrate and ultrasonic time on the formation of DSN were discussed. The structures of the obtained products were characterized by X-ray power diffraction, field emission scanning electron microscopy, transmission electron microscopy, and the chemical composition of DSN was examined by energy dispersive X-ray spectroscopy. The results show that the length of the trunks is approximately 2–5 μm and that of the lateral branches is about 0.5–2 μm. The conductive inks filled with dendritic silver and sphere silver powders were prepared respectively at mass fraction of 60%. The result shows that the coating of the conductive ink filled with dendritic silver has a lower sheet resistance of approximately 0.07 Ω/□ at a thickness of 20 μm.