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Structural evolution, interlayer coupling, band-gap, and optical properties of non-layered SiCNSs

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Abstract

Silicon carbide nanosheets (SiCNRs) have a broad application prospect in the new generation of micro/nanophotonic devices. Based on the previous study of layered SiCNSs (FL-SiCNSs), the first-principles calculation of non-layered SiCNSs (NL-SiCNSs) is carried out in this paper. According to the lattice structure and its evolution, the interlayer coupling mechanism of NL-SiCNSs is revealed. The lattice structure, band-gap, and optical properties of NL-SiCNSs and FL-SiCNSs with different thicknesses (molecular layers) are studied, and the effect of the interlayer coupling mechanism on the optical properties of SiCNSs is analyzed systematically. Results show that non-layered SiCNSs show strong reflection in the vertical direction, indicating that they can be used in UV reflectors. This research can provide a theoretical basis for the application of two-dimensional silicon carbide materials in electronics, optics, and other fields.

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Data Availability Statement

This manuscript has associated data in a data repository. [Authors’ comment: All data generated or analyzed during this study are included in this published article, and its supplementary information files].

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Acknowledgements

The authors thank the National Natural Science Foundation of China (Grant No. 11574261), the Hebei Province Natural Science Foundation (Grant No. A2021203030), and Innovation Capability Improvement Project of Hebei province (No. 22567605H).

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Authors and Affiliations

Authors

Contributions

LZY was responsible for data curation, investigation, methodology, and writing—original draft. WKL and PG were involved in conceptualization, data curation, investigation, and methodology. HY contributed to data curation, formal analysis, and writing—original draft. XXY took part in conceptualization, methodology, and writing—reviewing and editing. YLL assisted with formal analysis, investigation, and methodology. XYF participated in conceptualization, formal analysis, funding acquisition, methodology, validation, and writing—reviewing.

Corresponding author

Correspondence to Xiao-Yong Fang.

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Yang, LZ., Liu, WK., Yan, H. et al. Structural evolution, interlayer coupling, band-gap, and optical properties of non-layered SiCNSs. Eur. Phys. J. Plus 139, 66 (2024). https://doi.org/10.1140/epjp/s13360-024-04883-z

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