Hyperhoneycomb boron nitride with anisotropic mechanical, electronic and optical properties

TL;DR

This paper introduces a theoretically predicted hyperhoneycomb boron nitride crystal with unique anisotropic properties, high stability, and potential for electronic and optical applications, based on advanced computational methods.

Contribution

It proposes a new hyperhoneycomb BN structure with detailed analysis of its stability, electronic, and optical properties, expanding the understanding of BN materials.

Findings

Hp-BN is mechanically and thermodynamically stable.

It has a higher bulk modulus and smaller energy gap than c-BN.

Exhibits anisotropic electronic and optical properties with ultraviolet adsorption and visible/infrared transparency.

Abstract

Boron nitride structures have excellent thermal and chemical stabilities. Based on state-of-art theoretical calculations, we propose a wide gap semiconducting BN crystal with a three-dimensional hyperhoneycomb structure (Hp-BN), which is both mechanically and thermodynamically stable. Our calculated results show that Hp-BN has a higher bulk modulus and a smaller energy gap as compared to c-BN. Moreover, due to the unique bonding structure, Hp-BN exhibits anisotropic electronic and optical properties. It has great adsorption in the ultraviolet region, but it is highly transparent in the visible and infrared region, suggesting that the Hp-BN crystal could have potential applications in electronic and optical devices.