Paper Title
A STUDY OF REDUCED GRAPHENE OXIDE-NANOSILVER COLLOIDS PREPARED BY ELECTRICAL SPARK DISCHARGE METHOD AND ITS CONDUCTIVITY

Abstract
Abstract - This study prepared the reduced graphene oxide-nanosilver composite colloid from the reduced graphene oxide of different particle sizes dispersed in alcohol by the Electrical Spark Discharge Method (ESDM). It then compared the characteristics of the graphene prepared in water or alcohol. After preparing the graphene product, the treated product was prepared on a substrate using the bar coating method. The prepared reduced graphene oxide-silver was tested using a four-point probe or a Hall effect detector, and the electrical conductivity was analyzed. Different process parameters and raw materials can be produced by using the ESDM. The reduced graphene oxide-nanosilver colloid was prepared, and better preparation parameters were obtained, thus achieving the optimized process. Practically, the graphene-related products were processed into thin film patterns on the substrate. The film resistance and carrier mobility were tested, the electrical conductivity of the prepared product and was obtained. The feasibility of preparing conductive materials by the ESDM was evaluated. The graphene used in this study was made into the film form, and the sheet resistance was tested to analyze the electrical conductivity. The average sheet resistance of the reduced graphene oxide-silver prepared by dispersing the reduced graphene oxide in deionized water was 2.0718 MΩ/sq. The average sheet resistance of the reduced graphene oxide-silver prepared by dispersing the reduced graphene oxide in alcohol was 1.602 MΩ/sq. Keywords - Electrical Spark Discharge Method, four-point probe method, reduced graphene oxide, Silver nanoparticles