Transferred single-layer graphene on pre-patterned metal electrode: comparison of thermoelectric and electric properties

The graphene synthesized by the chemical vapor deposition (CVD) method on Cu foil was transferred onto the SiO₂ substrate with a pre-patterned electrode, and the electrical and thermoelectric properties were measured. Raman spectral analysis and thermoelectric coefficient measurement confirmed that the transferred graphene is mainly composed of single-layer and has p-type properties. The thermoelectric characteristics of the transferred graphene as well as the thermoelectric voltage image mapping in the locally torn, folded or bubbled region of graphene by the scanning probe method using the thermoelectric phenomenon were confirmed on a micro-scale.