Abstract
Absorption (K), reflection (R) and wavelength modulated transmission (ΔT/Δλ) spectra in SnS, SnS2 and SnSe crystals were investigated in temperature range from 300 to 10 K. Excitonic states were discovered in all investigated compounds. Parameters of observed excitons and character of electron transitions participating in absorption edge formation were determined. Optical anisotropy in interband gap minimum was investigated.
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Acknowledgements
The authors acknowledge the support from the National Agency for Research and Development under the Grant #15.817.02.32A, #15.817.02.08A and #15.817.02.29A. E. Monaico acknowledges support from the Alexander von Humboldt Foundation.
Conflict of Interest The authors declare that they have no conflict of interest.
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Zalamai, V.V., Tiron, A.V., Rusu, E.V., Monaico, E.V., Syrbu, N.N. (2020). Near-Edge Optical Properties of Layered Tin Sulfide (Selenide) Crystals. In: Tiginyanu, I., Sontea, V., Railean, S. (eds) 4th International Conference on Nanotechnologies and Biomedical Engineering. ICNBME 2019. IFMBE Proceedings, vol 77. Springer, Cham. https://doi.org/10.1007/978-3-030-31866-6_25
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DOI: https://doi.org/10.1007/978-3-030-31866-6_25
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