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Characterization of deep-level defects in GaNAs/GaAs heterostructures grown by APMOVPE Cover

Characterization of deep-level defects in GaNAs/GaAs heterostructures grown by APMOVPE

Open Access
|Dec 2016

Abstract

Conventional deep level transient spectroscopy (DLTS) and high-resolution Laplace DLTS techniques were used to study electrical properties of deep-level defects in dilute GaNAs epitaxial layers grown by atmospheric-pressure metalorganic vapourphase epitaxy (APMOVPE) on the GaAs substrate. Three samples with nitrogen concentrations of 1.2 %, 1.6 % and 2.7 % were investigated. In DLTS and LDLTS spectra of the samples, four predominant electron traps were observed. On the basis of the obtained electrical parameters and previously published results, one of the traps was associated with N-related complex defects, while the other traps with common GaAs-like native defects and impurities, called EL6, EL3 and EL2.

DOI: https://doi.org/10.1515/msp-2016-0126 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 726 - 734
Submitted on: Dec 18, 2015
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Accepted on: Nov 2, 2016
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Published on: Dec 19, 2016
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2016 Łukasz Gelczuk, Maria Dąbrowska-Szata, Beata Ściana, Damian Pucicki, Damian Radziewicz, Krzysztof Kopalko, Marek Tłaczała, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.