title: Large-scale graphene micropatterns via self-assembly-mediated process for flexible device application.
abstract: We report on a method for the large-scale production of graphene micropatterns by a self-assembly mediated process. The evaporation-induced self-assembly technique was engineered to produce highly ordered graphene patterns on flexible substrates in a simplified and scalable manner. The crossed stripe graphene patterns have been produced over a large area with regions consisting of single- and two-layer graphene. Based on these graphene patterns, flexible graphene-based field effect transistors have been fabricated with an ion-gel gate dielectric, which operates at low voltages of < 2 V with a hole and electron mobility of 214 and 106 cm(2)/V·s, respectively. The self-assembly approach described here may pave the way for the nonlithographic production of graphene patterns, which is scalable to large areas and compatible with roll-to-roll system.
authors.affiliation: Electronic Material and Device Research Center, Korea Electronics Technology Institute, Gyeonggi-do 463-816, Korea.
authors.forename: TaeYoung
authors.initials: T
authors.lastname: Kim
authors.forename: Hyeongkeun
authors.initials: H
authors.lastname: Kim
authors.forename: Soon Woo
authors.initials: SW
authors.lastname: Kwon
authors.forename: Yena
authors.initials: Y
authors.lastname: Kim
authors.forename: Won Kyu
authors.initials: WK
authors.lastname: Park
authors.forename: Dae Ho
authors.initials: DH
authors.lastname: Yoon
authors.forename: A-Rang
authors.initials: AR
authors.lastname: Jang
authors.forename: Hyeon Suk
authors.initials: HS
authors.lastname: Shin
authors.forename: Kwang S
authors.initials: KS
authors.lastname: Suh
authors.forename: Woo Seok
authors.initials: WS
authors.lastname: Yang
mesh_terms: D006108:Graphite / Q000737:chemistry*; D008567:Membranes, Artificial; D010100:Oxygen / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D013499:Surface Properties; D014173:Transistors, Electronic
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D006108:Graphite; D010100:Oxygen