Graphene is a single layer of carbon atom in a form of honey-comb lattice in which one atom forms each vertex. Because of its high thermal, electrical conductivity and strength, graphene is expected to be used on future technologies including transparent flexible display. However, lack of technology to transfer graphene without forming wrinkles on a semiconductor’s surface, which lowers its electrical conductivity, has been a serious obstacle for the commercialization of graphene.
A POSTECH research team consisting of Professor Kilwon Cho (CE), Hyunho Kim (CE Ph.D.) Seong Kyu Lee (CE Ph.D. candidate), and Researcher Seung Goo Lee (CE) successfully transferred graphene onto various surfaces without wrinkles. The research team used organic solvent instead of water, and electrical conductivity has been highly enhanced using the new procedure. The research was announced in Advanced Functional Materials on Apr. 4. This research was conducted with the assistance of the Center for Advanced Soft Electronics.