title: Growth of wrinkle-free graphene on texture-controlled platinum films and thermal-assisted transfer of large-scale patterned graphene.
abstract: Growth of large-scale patterned, wrinkle-free graphene and the gentle transfer technique without further damage are most important requirements for the practical use of graphene. Here we report the growth of wrinkle-free, strictly uniform monolayer graphene films by chemical vapor deposition on a platinum (Pt) substrate with texture-controlled giant grains and the thermal-assisted transfer of large-scale patterned graphene onto arbitrary substrates. The designed Pt surfaces with limited numbers of grain boundaries and improved surface perfectness as well as small thermal expansion coefficient difference to graphene provide a venue for uniform growth of monolayer graphene with wrinkle-free characteristic. The thermal-assisted transfer technique allows the complete transfer of large-scale patterned graphene films onto arbitrary substrates without any ripples, tears, or folds. The transferred graphene shows high crystalline quality with an average carrier mobility of ∼ 5500 cm(2) V(-1) s(-1) at room temperature. Furthermore, this transfer technique shows a high tolerance to variations in types and morphologies of underlying substrates.
authors.affiliation: School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 689-798, Korea.
authors.forename: Jae-Kyung
authors.initials: JK
authors.lastname: Choi
authors.forename: Jinsung
authors.initials: J
authors.lastname: Kwak
authors.forename: Soon-Dong
authors.initials: SD
authors.lastname: Park
authors.forename: Hyung Duk
authors.initials: HD
authors.lastname: Yun
authors.forename: Se-Yang
authors.initials: SY
authors.lastname: Kim
authors.forename: Minbok
authors.initials: M
authors.lastname: Jung
authors.forename: Sung Youb
authors.initials: SY
authors.lastname: Kim
authors.forename: Kibog
authors.initials: K
authors.lastname: Park
authors.forename: Seoktae
authors.initials: S
authors.lastname: Kang
authors.forename: Sung-Dae
authors.initials: SD
authors.lastname: Kim
authors.forename: Dong-Yeon
authors.initials: DY
authors.lastname: Park
authors.forename: Dong-Su
authors.initials: DS
authors.lastname: Lee
authors.forename: Suk-Kyoung
authors.initials: SK
authors.lastname: Hong
authors.forename: Hyung-Joon
authors.initials: HJ
authors.lastname: Shin
authors.forename: Soon-Yong
authors.initials: SY
authors.lastname: Kwon
keywords: chemical vapor deposition; patterned graphene; texture-controlled platinum; thermal-assisted transfer; wrinkle-free graphene