title: Growth of high-crystalline, single-layer hexagonal boron nitride on recyclable platinum foil.
abstract: Hexagonal boron nitride (h-BN) is gaining significant attention as a two-dimensional dielectric material, along with graphene and other such materials. Herein, we demonstrate the growth of highly crystalline, single-layer h-BN on Pt foil through a low-pressure chemical vapor deposition method that allowed h-BN to be grown over a wide area (8 × 25 mm(2)). An electrochemical bubbling-based method was used to transfer the grown h-BN layer from the Pt foil onto an arbitrary substrate. This allowed the Pt foil, which was not consumed during the process, to be recycled repeatedly. The UV-visible absorption spectrum of the single-layer h-BN suggested an optical band gap of 6.06 eV, while a high-resolution transmission electron microscopy image of the same showed the presence of distinct hexagonal arrays of B and N atoms, which were indicative of the highly crystalline nature and single-atom thickness of the h-BN layer. This method of growing single-layer h-BN over large areas was also compatible with use of a sapphire substrate.
authors.affiliation: Interdisciplinary School of Green Energy, Low Dimensional Carbon Materials Center, KIER-UNIST Advanced Center for Energy, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan, Korea.
authors.forename: Gwangwoo
authors.initials: G
authors.lastname: Kim
authors.forename: A-Rang
authors.initials: AR
authors.lastname: Jang
authors.forename: Hu Young
authors.initials: HY
authors.lastname: Jeong
authors.forename: Zonghoon
authors.initials: Z
authors.lastname: Lee
authors.forename: Dae Joon
authors.initials: DJ
authors.lastname: Kang
authors.forename: Hyeon Suk
authors.initials: HS
authors.lastname: Shin
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D010316:Particle Size; D010984:Platinum / Q000737:chemistry; D013499:Surface Properties
chemical_list: D001896:Boron Compounds; C017282:boron nitride; D010984:Platinum; D006108:Graphite