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Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials

The extended Hückel (eH) tight-binding method has historically been prized for its computational ease and intuitive chemical clarity. However, its lack of quantitative predictiveness has prevented the eH method from being used as a tool for rapidly screening materials for desired electronic properti...

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Autores principales: Grabill, Linda P., Berger, Robert F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6043563/
https://www.ncbi.nlm.nih.gov/pubmed/30002480
http://dx.doi.org/10.1038/s41598-018-28864-2
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author Grabill, Linda P.
Berger, Robert F.
author_facet Grabill, Linda P.
Berger, Robert F.
author_sort Grabill, Linda P.
collection PubMed
description The extended Hückel (eH) tight-binding method has historically been prized for its computational ease and intuitive chemical clarity. However, its lack of quantitative predictiveness has prevented the eH method from being used as a tool for rapidly screening materials for desired electronic properties. In this work, we demonstrate that when eH input parameters are calibrated using density functional theory (DFT) calculations of carefully chosen sets of simple crystals, the eH parameters retain most of their quantitative accuracy when transferred to more complex, structurally related phases. Using solar-energy-relevant semiconductors and insulators in the Sr–Ti–O family as a case study, we show that calibrated eH parameters can match the features of DFT band structures within about two tenths of an eV, at a tiny fraction of the computational cost of DFT.
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spelling pubmed-60435632018-07-15 Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials Grabill, Linda P. Berger, Robert F. Sci Rep Article The extended Hückel (eH) tight-binding method has historically been prized for its computational ease and intuitive chemical clarity. However, its lack of quantitative predictiveness has prevented the eH method from being used as a tool for rapidly screening materials for desired electronic properties. In this work, we demonstrate that when eH input parameters are calibrated using density functional theory (DFT) calculations of carefully chosen sets of simple crystals, the eH parameters retain most of their quantitative accuracy when transferred to more complex, structurally related phases. Using solar-energy-relevant semiconductors and insulators in the Sr–Ti–O family as a case study, we show that calibrated eH parameters can match the features of DFT band structures within about two tenths of an eV, at a tiny fraction of the computational cost of DFT. Nature Publishing Group UK 2018-07-12 /pmc/articles/PMC6043563/ /pubmed/30002480 http://dx.doi.org/10.1038/s41598-018-28864-2 Text en © The Author(s) 2018 Open Access This 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Grabill, Linda P.
Berger, Robert F.
Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials
title Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials
title_full Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials
title_fullStr Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials
title_full_unstemmed Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials
title_short Calibrating the Extended Hückel Method to Quantitatively Screen the Electronic Properties of Materials
title_sort calibrating the extended hückel method to quantitatively screen the electronic properties of materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6043563/
https://www.ncbi.nlm.nih.gov/pubmed/30002480
http://dx.doi.org/10.1038/s41598-018-28864-2
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