Specific features of the cathodoluminescence spectra of AlInGaN QWs, caused by the influence of phase separation and internal electric fields
- Authors: Kuznetsova Y.V.1, Jmerik V.N.1, Nechaev D.V.1, Kuznetsov A.M.2, Zamoryanskaya M.V.1
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Affiliations:
- Ioffe Physical–Technical Institute
- Nanotechnology Research and Education Centre, Russian Academy of Sciences
- Issue: Vol 50, No 7 (2016)
- Pages: 904-909
- Section: Semiconductor Structures, Low-Dimensional Systems, and Quantum Phenomena
- URL: https://journals.rcsi.science/1063-7826/article/view/197402
- DOI: https://doi.org/10.1134/S1063782616070125
- ID: 197402
Cite item
Abstract
The specific features of the cathodoluminescence (CL) spectra in AlInGaN heterostructures, caused by the influence of phase separation and internal electric fields, observed at varied CL excitation density, are studied. It is shown that the evolution of the CL spectrum and the variation in the spectral position of emission lines of nanoscale layers with current density in the primary electron beam makes it possible to identify the occurrence of phase separation in the layer and, in the absence of this separation, to estimate the electric-field strength in the active region of the structure.
About the authors
Ya. V. Kuznetsova
Ioffe Physical–Technical Institute
Author for correspondence.
Email: yana@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
V. N. Jmerik
Ioffe Physical–Technical Institute
Email: yana@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
D. V. Nechaev
Ioffe Physical–Technical Institute
Email: yana@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021
A. M. Kuznetsov
Nanotechnology Research and Education Centre, Russian Academy of Sciences
Email: yana@mail.ioffe.ru
Russian Federation, St. Petersburg, 195220
M. V. Zamoryanskaya
Ioffe Physical–Technical Institute
Email: yana@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021