Molecular-Beam Epitaxy of Two-Dimensional GaSe Layers on GaAs(001) and GaAs(112) Substrates: Structural and Optical Properties
- Authors: Sorokin S.V.1, Avdienko P.S.1, Sedova I.V.1, Kirilenko D.A.1, Yagovkina M.A.1, Smirnov A.N.1, Davydov V.Y.1, Ivanov S.V.1
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Affiliations:
- Ioffe Institute
- Issue: Vol 53, No 8 (2019)
- Pages: 1131-1137
- Section: Fabrication, Treatment, and Testing of Materials and Structures
- URL: https://journals.rcsi.science/1063-7826/article/view/206682
- DOI: https://doi.org/10.1134/S1063782619080189
- ID: 206682
Cite item
Abstract
The results of studies of the structural and optical properties of two-dimensional GaSe layers grown by molecular-beam epitaxy on GaAs(001) and GaAs(112) substrates using a valve cracking cell for the Se source are reported. The influence of the MBE growth parameters (the substrate temperature, Ga flux intensity, Se/Ga incident flux ratio) on the surface morphology of the layers is studied. By means of transmission electron microscopy, electron diffraction technique, and Raman spectroscopy, it is shown that the structure of the GaSe layers corresponds to the γ-GaSe polytype. From X-ray diffraction analysis, it is established that there exist α-Ga2Se3 inclusions in the GaSe layers grown under conditions of high enrichment of the growth surface with Se.
About the authors
S. V. Sorokin
Ioffe Institute
Author for correspondence.
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
P. S. Avdienko
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
I. V. Sedova
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
D. A. Kirilenko
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
M. A. Yagovkina
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. N. Smirnov
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. Yu. Davydov
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021
S. V. Ivanov
Ioffe Institute
Email: sorokin@beam.ioffe.ru
Russian Federation, St. Petersburg, 194021