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Contactless doping characterization of [Formula: see text] using acceptor Cd probes
Finding suitable p-type dopants, as well as reliable doping and characterization methods for the emerging wide bandgap semiconductor [Formula: see text] -[Formula: see text] could strongly influence and contribute to the development of the next generation of power electronics. In this work, we combi...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418202/ https://www.ncbi.nlm.nih.gov/pubmed/36028742 http://dx.doi.org/10.1038/s41598-022-18121-y |
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author | Barbosa, Marcelo B. Correia, João Guilherme Lorenz, Katharina Lopes, Armandina M. L. Oliveira, Gonçalo N. P. Fenta, Abel S. Schell, Juliana Teixeira, Ricardo Nogales, Emilio Méndez, Bianchi Stroppa, Alessandro Araújo, João Pedro |
author_facet | Barbosa, Marcelo B. Correia, João Guilherme Lorenz, Katharina Lopes, Armandina M. L. Oliveira, Gonçalo N. P. Fenta, Abel S. Schell, Juliana Teixeira, Ricardo Nogales, Emilio Méndez, Bianchi Stroppa, Alessandro Araújo, João Pedro |
author_sort | Barbosa, Marcelo B. |
collection | PubMed |
description | Finding suitable p-type dopants, as well as reliable doping and characterization methods for the emerging wide bandgap semiconductor [Formula: see text] -[Formula: see text] could strongly influence and contribute to the development of the next generation of power electronics. In this work, we combine easily accessible ion implantation, diffusion and nuclear transmutation methods to properly incorporate the Cd dopant into the [Formula: see text] -[Formula: see text] lattice, being subsequently characterized at the atomic scale with the Perturbed Angular Correlation (PAC) technique and Density Functional Theory (DFT) simulations. The acceptor character of Cd in [Formula: see text] -[Formula: see text] is demonstrated, with Cd sitting in the octahedral Ga site having a negative charge state, showing no evidence of polaron deformations nor extra point defects nearby. The possibility to determine the charge state of Cd will allow assessing the doping type, in particular proving p-type character, without the need for ohmic contacts. Furthermore, a possible approach for contactless charge mobility studies is demonstrated, revealing thermally activated free electrons for temperatures above [Formula: see text] 648 K with an activation energy of 0.54(1) and local electron transport dominated by a tunneling process between defect levels and the Cd probes at lower temperatures. |
format | Online Article Text |
id | pubmed-9418202 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-94182022022-08-28 Contactless doping characterization of [Formula: see text] using acceptor Cd probes Barbosa, Marcelo B. Correia, João Guilherme Lorenz, Katharina Lopes, Armandina M. L. Oliveira, Gonçalo N. P. Fenta, Abel S. Schell, Juliana Teixeira, Ricardo Nogales, Emilio Méndez, Bianchi Stroppa, Alessandro Araújo, João Pedro Sci Rep Article Finding suitable p-type dopants, as well as reliable doping and characterization methods for the emerging wide bandgap semiconductor [Formula: see text] -[Formula: see text] could strongly influence and contribute to the development of the next generation of power electronics. In this work, we combine easily accessible ion implantation, diffusion and nuclear transmutation methods to properly incorporate the Cd dopant into the [Formula: see text] -[Formula: see text] lattice, being subsequently characterized at the atomic scale with the Perturbed Angular Correlation (PAC) technique and Density Functional Theory (DFT) simulations. The acceptor character of Cd in [Formula: see text] -[Formula: see text] is demonstrated, with Cd sitting in the octahedral Ga site having a negative charge state, showing no evidence of polaron deformations nor extra point defects nearby. The possibility to determine the charge state of Cd will allow assessing the doping type, in particular proving p-type character, without the need for ohmic contacts. Furthermore, a possible approach for contactless charge mobility studies is demonstrated, revealing thermally activated free electrons for temperatures above [Formula: see text] 648 K with an activation energy of 0.54(1) and local electron transport dominated by a tunneling process between defect levels and the Cd probes at lower temperatures. Nature Publishing Group UK 2022-08-26 /pmc/articles/PMC9418202/ /pubmed/36028742 http://dx.doi.org/10.1038/s41598-022-18121-y Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Barbosa, Marcelo B. Correia, João Guilherme Lorenz, Katharina Lopes, Armandina M. L. Oliveira, Gonçalo N. P. Fenta, Abel S. Schell, Juliana Teixeira, Ricardo Nogales, Emilio Méndez, Bianchi Stroppa, Alessandro Araújo, João Pedro Contactless doping characterization of [Formula: see text] using acceptor Cd probes |
title | Contactless doping characterization of [Formula: see text] using acceptor Cd probes |
title_full | Contactless doping characterization of [Formula: see text] using acceptor Cd probes |
title_fullStr | Contactless doping characterization of [Formula: see text] using acceptor Cd probes |
title_full_unstemmed | Contactless doping characterization of [Formula: see text] using acceptor Cd probes |
title_short | Contactless doping characterization of [Formula: see text] using acceptor Cd probes |
title_sort | contactless doping characterization of [formula: see text] using acceptor cd probes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418202/ https://www.ncbi.nlm.nih.gov/pubmed/36028742 http://dx.doi.org/10.1038/s41598-022-18121-y |
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