Optical spectra of bilayer borophene synthesized on Ag(111) film

Rui Yang; Xin Ren; Mengtao Sun

doi:10.1016/j.saa.2022.121711

Optical spectra of bilayer borophene synthesized on Ag(111) film

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Dec 5:282:121711. doi: 10.1016/j.saa.2022.121711. Epub 2022 Aug 4.

Authors

Rui Yang¹, Xin Ren², Mengtao Sun³

Affiliations

¹ School of Mathematics and Physics, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China.
² Beijing No. 12 High School, Beijing 100071, China.
³ School of Mathematics and Physics, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China. Electronic address: mengtaosun@ustb.edu.cn.

PMID: 35940069
DOI: 10.1016/j.saa.2022.121711

Abstract

In this paper, we theoretically investigated electronic structures, density of states (DOS), optical absorption, dielectric function of bilayer borophene synthesized on Ag(111) film, stimulated by the recent experimental report [Nature materials 2022, 21:35]. The results show that there is strong coupling between the Ag film and borophene layers. In the absorption spectra of BL borophene on Ag(111) substrate, there are strong absorption peaks in visible and infrared (IR) regions, which reveals strong plexciton peaks in visible and IR regions, which is contributed from the plasmonic and excitonic coupling interaction by the hybrid between Ag film and BL borophene. Raman modes of strongest vibration directly reflects the interlayer interaction of interlayer chemical bond. Our results not only provide physical insight into BL borophene synthesized on Ag(111) film, but also propose the potential applications of BL borophene in optoelectronic devices.