Abstract
Heterostructures of the CdTe/ZnTe type with ultrathin quantum wells are studied. Lines of light and heavy excitons bound to the CdTe layers are observed in the spectra. It is found that the photoluminescence intensity of the light exciton is comparable to the luminescence intensity of the heavy exciton. The temperature shifts of these lines are different, and the lines are intersected at a temperature of 65 K. The estimates of the energy and wave functions of the exciton states have made it possible to clarify parameters of some bands and excitons in such structures.
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Funding
In this study, V.F. Agekyan, N.G. Filosofov, and A.Yu. Serov used the equipment of Science Park of St. Petersburg State University within project INI_2019, no. 37688845. The participation of G. Karczewski in the study was partially supported by the National Research Center (grant nos. 2017/25/B/ST3/02966 and 2018/30/M/ST3/00276).
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Translated by O. Kadkin
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Filosofov, N.G., Serov, A.Y., Karczewski, G. et al. Photoluminescence of Heterostructures with Ultrathin CdTe/ZnTe Quantum Wells. Phys. Solid State 62, 1633–1638 (2020). https://doi.org/10.1134/S1063783420090073
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DOI: https://doi.org/10.1134/S1063783420090073