BN White Graphene with "Colorful" Edges: The Energies and Morphology

被引：305

作者：

Liu, Yuanyue

Bhowmick, Somnath

Yakobson, Boris I. ^{[1
]}

机构：

[1] Rice Univ, Dept Mech Engn & Mat Sci, Dept Chem, Houston, TX 77005 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 08期

关键词：

Boron-nitride; graphene; edges; interfaces; bandgap; magnetism; BORON-NITRIDE NANOTUBES; SURFACE;

D O I：

10.1021/nl2011142

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Interfaces play a key role in low dimensional materials like graphene or its boron nitrogen analog, white graphene. The edge energy of hexagonal boron nitride (h-BN) has not been determined as its lower symmetry makes it difficult to separate the opposite B-rich and N-rich zigzag sides. We report unambiguous energy values for arbitrary edges of BN, including the dependence on the elemental chemical potentials of B and N species. A useful manifestation of the additional Gibbs degree of freedom in the binary system, this dependence offers a way to control the morphology of pure BN or its carbon inclusions and to engineer their electronic and magnetic properties.

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页码：3113 / 3116

页数：4

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