Growth of High-Crystalline, Single-Layer Hexagonal Boron Nitride on Recyclable Platinum Foil

• Published in: Nano letters Vol. 13; no. 4; pp. 1834 - 1839
• Main Authors: Kim, Gwangwoo, Jang, A-Rang, Jeong, Hu Young, Lee, Zonghoon, Kang, Dae Joon, Shin, Hyeon Suk
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 10.04.2013
• Subjects: Arrays; Boron Compounds - chemistry; Boron nitride; Chemical vapor deposition; Chemical vapor deposition (including plasma-enhanced cvd, mocvd, etc.); Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Crystal structure; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Foils; Fullerenes and related materials; diamonds, graphite; Graphene; Graphite - chemistry; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Microscopy, Electron, Transmission; Nanoparticles - chemistry; Nanostructure; Nanostructures - chemistry; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Particle Size; Physics; Platinum; Platinum - chemistry; Specific materials; Surface Properties; single layer; platinum foil; Hexagonal boron nitride; ammonia borane; chemical vapor deposition; Photonic band gap; Dielectric materials; Electrochemical method; Boron nitride; CVD; Hexagonal lattices; Monocrystals; Hexagonal crystals; Transmission electron microscopy; Graphene; Platinum; Optical properties; Low pressure; Growth mechanism; Single atom; Ultraviolet visible spectrum; Arrays
• ISSN: 1530-6984; 1530-6992
• DOI: 10.1021/nl400559s

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 mm2). 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.