Enhancing thermoelectric properties of multilayer graphene with Au deposition

This study examines the effect of Au deposition on the thermoelectric properties of multilayer CVD graphene films. The Raman spectra show that Au deposition impacts the morphology as well as the thermoelectric properties of multilayer CVD graphene films. The D band and G band intensity ratio (ID/IG) increases according to increasing the concentration of Au, while the 2D band and G band intensity ratio (I2D/IG) ratio decreases. An increasing in the Seebeck coefficient and power factor associated with an increasing in the formation of structural defects in the sample. The maximum Seebeck coefficient obtained was around 4.67 μV/K compared to 0.66 μV/K for pristine graphene at 528 K. Our findings suggest that Au-deposited graphene provides insight into the fundamental study of physics that controls thermoelectric properties the thermoelectric properties of Au-deposited graphene materials