Skip to main content
Log in

Spin–orbit coupling effect on electronic, linear and nonlinear optical properties of Bi2S3 and the ternary bismuth sulfide Bi2S2.75Se0.25: Ab-initio calculations

  • Published:
Optical and Quantum Electronics Aims and scope Submit manuscript

Abstract

Although the relevant properties of the bismuthinite Bi2S3, it was recently approved that the substitution of Se atoms in the Bi2S3 lattice can significantly enhance its electro-optical properties. In the present work, a detailed study on the structural, electronic and optical properties of Bi2S2.75Se0.25 has been carried out based on first principle calculations. The simultaneous effect of Se-doping and spin–orbit coupling (SOC) on bismuth sulfide Bi2S3 was investigated. Our calculations show that Bi2S2.75Se0.25 exhibits a narrow direct band gap of 1.062 eV after inclusion of the (SOC). The calculation of the carrier effective masses indicates that Bi2S2.75Se0.25 may possess a high electron mobility material which is in accordance with experimental studies. The linear absorption optical spectra for both Bi2S3 and Bi2S2.75Se0.25 show that doping bismuthinite with (Se) increases the optical absorption coefficient in the visible range and takes a value up to 10105 cm−1. In addition, the dielectric function, optical conductivity and the energy loss function of Bi2S3 and Bi2S2.75Se0.25 were also derived. The addition of the (Se) content induces a red shift in agreement with experimental studies. A noticeable effect of the (SOC) on the linear optical parameters was observed. The stability of the excitons was also studied by the estimation of the binding energy value. The dispersion energy parameters of Bi2S3 and Bi2S2.75Se0.25 were estimated using a single oscillator model. Some nonlinearities have been computed with and without inclusion of (SOC) showing that Bi2S2.75Se0.25 with large nonlinear optical parameters is promising candidate in photonic switching applications.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

References

Download references

Author information

Authors and Affiliations

Authors

Contributions

HBA Formal analysis, Methodology, Investigation, Writing-original draft, Supervision, Validation, Conceptualization WO Formal analysis, Validation, Investigation, Conceptualization, Writing—review & editing.

Corresponding author

Correspondence to H. Ben Abdallah.

Ethics declarations

Conflict of interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ben Abdallah, H., Ouerghui, W. Spin–orbit coupling effect on electronic, linear and nonlinear optical properties of Bi2S3 and the ternary bismuth sulfide Bi2S2.75Se0.25: Ab-initio calculations. Opt Quant Electron 54, 20 (2022). https://doi.org/10.1007/s11082-021-03411-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s11082-021-03411-y

Keywords

Navigation