Jun Yin, Jin Yu, Xuemei Li, Jidong Li, Jianxin Zhou, Zhuhua Zhang, and Wanlin Guo. Large Single-Crystal Hexagonal Boron Nitride Monolayer Domains with Controlled Morphology and Straight Merging Boundaries. Small (2015)

Small
Jun Yin, Jin Yu, Xuemei Li, Jidong Li, Jianxin Zhou, Zhuhua Zhang, and Wanlin Guo Small(2015) DOI: 10.1002/smll.201500210
Large Single-Crystal Hexagonal Boron Nitride Monolayer Domains with Controlled Morphology and Straight Merging Boundaries

wlguo@nuaa.edu.cn
State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education and Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China

Article first published online: 3 JUN 2015

Abstract

Hexagonal boron nitride monolayers with domain sizes up to 700 μm2 and geometry from triangle to hexagon are fabricated through a refined control over the precursor and morphology of the copper substrate. Hydrogen etching is shown to tailor the h-BN monolayers precisely along the grain boundaries, providing their morphology over micro­meter scale and a new avenue toward fabricating nanoribbons.

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