title: High-angle tilt boundary graphene domain recrystallized from mobile hot-wire-assisted chemical vapor deposition system.
abstract: Crystallization of materials has attracted research interest for a long time, and its mechanisms in three-dimensional materials have been well studied. However, crystallization of two-dimensional (2D) materials is yet to be challenged. Clarifying the dynamics underlying growth of 2D materials will provide the insight for the potential route to synthesize large and highly crystallized 2D domains with low defects. Here, we present the growth dynamics and recrystallization of 2D material graphene under a mobile hot-wire assisted chemical vapor deposition (MHW-CVD) system. Under local but sequential heating by MHW-CVD system, the initial nucleation of nanocrystalline graphenes, which was not extended into the growth stage due to the insufficient thermal energy, took a recrystallization and converted into a grand single crystal domain. During this process, the stitching-like healing of graphene was also observed. The local but sequential endowing thermal energy to nanocrystalline graphenes enabled us to simultaneously reveal the recrystallization and healing dynamics in graphene growth, which suggests an alternative route to synthesize a highly crystalline and large domain size graphene. Also, this recrystallization and healing of 2D nanocrystalline graphenes offers an interesting insight on the growth mechanism of 2D materials.
authors: Department of Materials Science and Engineering, Korea Advanced Institute of Science & Technology (KAIST) , Daejeon 305-701, Republic of Korea.
authors: Jinsup
authors: J
authors: Lee
authors: Jinwook
authors: J
authors: Baek
authors: Gyeong Hee
authors: GH
authors: Ryu
authors: Mi Jin
authors: MJ
authors: Lee
authors: Seran
authors: S
authors: Oh
authors: Seul Ki
authors: SK
authors: Hong
authors: Bo-Hyun
authors: BH
authors: Kim
authors: Seok-Hee
authors: SH
authors: Lee
authors: Byung Jin
authors: BJ
authors: Cho
authors: Zonghoon
authors: Z
authors: Lee
authors: Seokwoo
authors: S
authors: Jeon