Abstract:Conductive silver paste is an important electronic material that can improve the connection and transmission efficiency of electronic devices and is widely used in the solar and electronics industry. Currently, the production process of conductive silver paste is cumbersome and expensive due to the use of high-cost materials such as nanosilver to ensure good conductivity. In this study, nanocrystalline/amorphous hybrid copper zirconium silver powder was prepared by the inert gas condensation method with laser evaporation. Its microstructure and morphology were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy, etc. It was then used as a conductive filler to prepare the high-conductive silver paste, and the conductivity of the silver paste after high-temperature sintering with different amounts of composite copper zirconium silver powder was measured. The experimental results showed that the nanocrystalline/amorphous mixed copper zirconium silver powder prepared by the inert gas condensation method had uniform particle size, with an average size of approximately 35 nm. The conductivity was optimal when the additional amount of hybrid copper zirconium silver powder to the conductive silver paste was 0.5%-1.5%. At 1% nanopowder addition, the sheet resistance after sintering could be as low as 5.63 mΩ/□.