Application of Gold Powder Made from Gold Leaf for Conductive Inks

In this work, gold powder made from gold leaf investigated to have the potential as a filler of conductive ink. The resistance of a conductive film decreased from 6.2 k Omega to 1 Omega by adding only 2.0 wt% of gold powder to conductive polymer (PEDOT:PSS) ink. The change of the resistance depends on the characteristics of gold powder. Gold powder with smaller and uniform sizes and good dispersibility is beneficial to form a continuous percolation network.