Energy Gaps and Stark Effect in Boron Nitride Nanoribbons

Abstract

A first-principles investigation of the electronic properties of boron nitride nanoribbons (BNNRs) having either armchair or zigzag shaped edges passivated by hydrogen with widths up to 10 nm is presented. Band gaps of armchair BNNRs exhibit family-dependent oscillations as the width increases and, for ribbons wider than 3 nm, converge to a constant value that is 0.02 eV smaller than the bulk band gap of a boron nitride sheet owing to the existence of very weak edge states. The band gap of zigzag BNNRs monotonically decreases and converges to a gap that is 0.7 eV smaller than the bulk gap due to the presence of strong edge states. When a transverse electric field is applied, the band gaps of armchair BNNRs decrease monotonically with the field strength. For the zigzag BNNRs, however, the band gaps and the carrier effective masses either increase or decrease depending on the direction and the strength of the field.

5 pages, 5 figures

References in corpus (7)

• Two Dimensional Atomic Crystals
• Energy Band Gap Engineering of Graphene Nanoribbons
• Energy Gaps in Graphene Nanoribbons
• Half-Metallic Graphene Nanoribbons
• Graphene Nano-Ribbon Electronics
• Electronic States of Graphene Nanoribbons
• Energy-gap modulation of boron nitride nanoribbons by transverse electric fields: First-principles calculations

Cited by in corpus (10)

• Intrinsic Half-Metallicity in Modified Graphene Nanoribbons
• Adsorption of Alkali, Alkaline Earth and Transition Metal Atoms on Silicene
• Unusual Scaling Laws of the Band Gap and Optical Absorption of Phosphorene Nanoribbons
• Electronic Structures of SiC Nanoribbons
• Superlattice Structures of Graphene based Nanoribbons
• How will freestanding borophene nanoribbons look like? An analysis of their possible structures, magnetism and transport properties
• Gate-versus defect-induced voltage drop and negative differential resistance in vertical graphene heterostructures
• Water induced bandgap engineering in nanoribbons of hexagonal boron nitride
• Massless Dirac cones in graphene: experiments and theory
• Thermodynamic Favorability of the 1T Phase over the 1H Phase in Group III Metal Monochalcogenide Zigzag Nanoribbons