Polarization-dependent excitons in Borophene-Black phosphorus heterostructures

Yuqiang Wu; Mengtao Sun

doi:10.1016/j.saa.2023.122372

Polarization-dependent excitons in Borophene-Black phosphorus heterostructures

Spectrochim Acta A Mol Biomol Spectrosc. 2023 Apr 15:291:122372. doi: 10.1016/j.saa.2023.122372. Epub 2023 Jan 16.

Authors

Yuqiang Wu¹, Mengtao Sun²

Affiliations

¹ School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100086, PR China.
² School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100086, PR China. Electronic address: mengtaosun@ustb.edu.cn.

PMID: 36657291
DOI: 10.1016/j.saa.2023.122372

Abstract

In this paper, the optical properties of β1-phase borophene-black phosphorus heterostructures (BBPHs) are theoretically investigated by first principal calculations, including absorption spectra, band structures, IR spectra, and Raman spectra. The calculation results show that constructing BBPHs could form covalent bonds between hetero-layers, making crystal structure more stable, and optical properties of BBPHs are significantly distinctive to that of the borophene and black phosphorus (BP) monomers, and polarization reversal occurs when two monomer materials form a heterostructure. The BBPHs show excellent polarization characteristics in visible or infrared region. Our results is of a certain reference value for the future application of optoelectronic devices based on two-dimensional (2D) heterostructures.