Issue 24, 2015

Atomic-scale dynamics of triangular hole growth in monolayer hexagonal boron nitride under electron irradiation

Abstract

The production of holes by electron beam irradiation in hexagonal boron nitride (hBN), which has a lattice similar to that of graphene, is monitored over time using atomic resolution transmission electron microscopy. The holes appear to be initiated by the formation of a vacancy of boron and grow in a manner that retains an overall triangular shape. The hole growth process involves the formation of single chains of B and N atoms and is accompanied by the ejection of atoms and bundles of atoms along the hole edges, as well as atom migration. These observations are compared to density functional theory calculations and molecular dynamics simulations.

Graphical abstract: Atomic-scale dynamics of triangular hole growth in monolayer hexagonal boron nitride under electron irradiation

Supplementary files

Article information

Article type
Paper
Submitted
06 Mar 2015
Accepted
15 Apr 2015
First published
20 Apr 2015
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2015,7, 10600-10605

Author version available

Atomic-scale dynamics of triangular hole growth in monolayer hexagonal boron nitride under electron irradiation

G. H. Ryu, H. J. Park, J. Ryou, J. Park, J. Lee, G. Kim, H. S. Shin, C. W. Bielawski, R. S. Ruoff, S. Hong and Z. Lee, Nanoscale, 2015, 7, 10600 DOI: 10.1039/C5NR01473E

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