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Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models

Diamond surface properties show a strong dependence on its chemical termination. Hydrogen-terminated and oxygen-terminated diamonds are the most studied terminations with many applications in the electronic and bioelectronic device field. One of the main techniques for the characterization of diamon...

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Autores principales: Alba, Gonzalo, Villar, M. Pilar, Alcántara, Rodrigo, Navas, Javier, Araujo, Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7353094/
https://www.ncbi.nlm.nih.gov/pubmed/32570951
http://dx.doi.org/10.3390/nano10061193
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author Alba, Gonzalo
Villar, M. Pilar
Alcántara, Rodrigo
Navas, Javier
Araujo, Daniel
author_facet Alba, Gonzalo
Villar, M. Pilar
Alcántara, Rodrigo
Navas, Javier
Araujo, Daniel
author_sort Alba, Gonzalo
collection PubMed
description Diamond surface properties show a strong dependence on its chemical termination. Hydrogen-terminated and oxygen-terminated diamonds are the most studied terminations with many applications in the electronic and bioelectronic device field. One of the main techniques for the characterization of diamond surface terminations is X-ray photoelectron spectroscopy (XPS). In this sense, the use of angle-resolved XPS (ARXPS) experiments allows obtaining depth-dependent information used here to evidence (100)-O-terminated diamond surface atomic configuration when fabricated by acid treatment. The results were used to compare the chemistry changes occurring during the oxidation process using a sublayer XPS intensity model. The formation of non-diamond carbon phases at the subsurface and higher oxygen contents were shown to result from the oxygenation treatment. A new (100) 1 × 1:O surface reconstruction model is proposed to explain the XPS quantification results of O-terminated diamond.
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spelling pubmed-73530942020-07-15 Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models Alba, Gonzalo Villar, M. Pilar Alcántara, Rodrigo Navas, Javier Araujo, Daniel Nanomaterials (Basel) Article Diamond surface properties show a strong dependence on its chemical termination. Hydrogen-terminated and oxygen-terminated diamonds are the most studied terminations with many applications in the electronic and bioelectronic device field. One of the main techniques for the characterization of diamond surface terminations is X-ray photoelectron spectroscopy (XPS). In this sense, the use of angle-resolved XPS (ARXPS) experiments allows obtaining depth-dependent information used here to evidence (100)-O-terminated diamond surface atomic configuration when fabricated by acid treatment. The results were used to compare the chemistry changes occurring during the oxidation process using a sublayer XPS intensity model. The formation of non-diamond carbon phases at the subsurface and higher oxygen contents were shown to result from the oxygenation treatment. A new (100) 1 × 1:O surface reconstruction model is proposed to explain the XPS quantification results of O-terminated diamond. MDPI 2020-06-18 /pmc/articles/PMC7353094/ /pubmed/32570951 http://dx.doi.org/10.3390/nano10061193 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Alba, Gonzalo
Villar, M. Pilar
Alcántara, Rodrigo
Navas, Javier
Araujo, Daniel
Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
title Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
title_full Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
title_fullStr Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
title_full_unstemmed Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
title_short Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models
title_sort surface states of (100) o-terminated diamond: towards other 1 × 1:o reconstruction models
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7353094/
https://www.ncbi.nlm.nih.gov/pubmed/32570951
http://dx.doi.org/10.3390/nano10061193
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