Abstract
The exciton photoluminescence of zinc oxide is studied in the temperature range 5–300 K. The formation of the exciton emission band profile in the spectra of undoped crystals, high-purity powder, and thin ALD films 4–450 nm in thickness at 300 K and at excitation by a He–Cd laser is analyzed. The effects of the photodesorption and photoadsorption of atmospheric oxygen on the exciton emission spectrum of a ZnO powder in sequential vacuum–air cycles have been studied at room temperature during continuous excitation by a He–Cd laser.
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ACKNOWLEDGMENTS
The authors are grateful to the collaborators of the Resource Center “Innovation technologies of composite nanomaterials” at the St. Petersburg State University.
Funding
This work was supported by the St. Petersburg state University (project no.51125686) and the Russian Foundation for Basic Research (project no. 190200576).
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Translated by Yu. Ryzhkov
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Akopyan, I.K., Labzovskaya, M.E., Novikov, B.V. et al. On the Nature of the Near-Edge Radiation of ZnO at Room Temperature. Phys. Solid State 62, 2138–2142 (2020). https://doi.org/10.1134/S1063783420110025
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DOI: https://doi.org/10.1134/S1063783420110025