On the Nature of the Near-Edge Radiation of ZnO at Room Temperature

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 ef...

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Bibliographic Details
Published in:Physics of the solid state 2020-11, Vol.62 (11), p.2138-2142
Main Authors: Akopyan, I. Kh, Labzovskaya, M. E., Novikov, B. V., Serov, A. Yu, Filosofov, N. G., Grigor’eva, N. R.
Format: Article
Language:English
Subjects:
Dielectric films
Emission spectra
Excitation
Excitation spectra
Excitons
Force and energy
Optical Properties
Photoluminescence
Physics
Physics and Astronomy
Powders
Room temperature
Solid State Physics
Thin films
Zinc oxide
Zinc oxides
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Summary: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.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783420110025