Specific features of the cathodoluminescence spectra of AlInGaN QWs, caused by the influence of phase separation and internal electric fields

Journal Article · Fri Jul 15 00:00:00 EDT 2016 · Semiconductors

DOI:https://doi.org/10.1134/S1063782616070125· OSTI ID:22649743

Jmerik, V. N.; Nechaev, D. V. ^[1]; Kuznetsov, A. M. ^[2]; Zamoryanskaya, M. V. ^[1]

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1. Russian Academy of Sciences, Ioffe Physical–Technical Institute (Russian Federation)
2. St. Petersburg Academic University, Nanotechnology Research and Education Centre, Russian Academy of Sciences (Russian Federation)

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.

• OSTI ID: 22649743
• Journal Information: Semiconductors, Vol. 50, Issue 7; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
CATHODOLUMINESCENCE
CURRENT DENSITY
ELECTRIC FIELDS
ELECTRON BEAMS
ELECTRONS
EMISSION SPECTRA
EXCITATION
GALLIUM NITRIDES
HETEROJUNCTIONS
INDIUM COMPOUNDS
LAYERS
NANOSTRUCTURES