Evaluation of the Electrical and Thermal Conductivity of Graphene Nanoplatelets Thin Films

This paper provides a study of the electrothermal properties of commercial films made by pressed Graphene Nano-Platelets (GNPs) in view of their use in electrical packaging applications. Specifically, the electrical and thermal conductivity values are estimated by means of an identification procedure based on the joint use of experimental characterization and numerical models. In particular, a novel and low-cost methodology is proposed and validated for the identification of thermal conductivity. A negative derivative of the electrical resistivity versus temperature is found for a wide range of operating temperatures