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Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films
Giant optical transmittance changes of over 300% in wide wavelength range from 500 nm to 2500 nm were observed in LaBaCo(2)O(5.5+δ) thin films annealed in air and ethanol ambient, respectively. The reduction process induces high density of ordered oxygen vacancies and the formation of LaBaCo(2)O(5.5...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5120332/ https://www.ncbi.nlm.nih.gov/pubmed/27876830 http://dx.doi.org/10.1038/srep37496 |
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author | Cheng, Sheng Lu, Jiangbo Han, Dong Liu, Ming Lu, Xiaoli Ma, Chunrui Zhang, Shengbai Chen, Chonglin |
author_facet | Cheng, Sheng Lu, Jiangbo Han, Dong Liu, Ming Lu, Xiaoli Ma, Chunrui Zhang, Shengbai Chen, Chonglin |
author_sort | Cheng, Sheng |
collection | PubMed |
description | Giant optical transmittance changes of over 300% in wide wavelength range from 500 nm to 2500 nm were observed in LaBaCo(2)O(5.5+δ) thin films annealed in air and ethanol ambient, respectively. The reduction process induces high density of ordered oxygen vacancies and the formation of LaBaCo(2)O(5.5) (δ = 0) structure evidenced by aberration-corrected transmission electron microscopy. Moreover, the first-principles calculations reveal the origin and mechanism of optical transmittance enhancement in LaBaCo(2)O(5.5) (δ = 0), which exhibits quite different energy band structure compared to that of LaBaCo(2)O(6) (δ = 0.5). The discrepancy of energy band structure was thought to be the direct reason for the enhancement of optical transmission in reducing ambient. Hence, LaBaCo(2)O(5.5+δ) thin films show great prospect for applications on optical gas sensors in reducing/oxidizing atmosphere. |
format | Online Article Text |
id | pubmed-5120332 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51203322016-11-28 Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films Cheng, Sheng Lu, Jiangbo Han, Dong Liu, Ming Lu, Xiaoli Ma, Chunrui Zhang, Shengbai Chen, Chonglin Sci Rep Article Giant optical transmittance changes of over 300% in wide wavelength range from 500 nm to 2500 nm were observed in LaBaCo(2)O(5.5+δ) thin films annealed in air and ethanol ambient, respectively. The reduction process induces high density of ordered oxygen vacancies and the formation of LaBaCo(2)O(5.5) (δ = 0) structure evidenced by aberration-corrected transmission electron microscopy. Moreover, the first-principles calculations reveal the origin and mechanism of optical transmittance enhancement in LaBaCo(2)O(5.5) (δ = 0), which exhibits quite different energy band structure compared to that of LaBaCo(2)O(6) (δ = 0.5). The discrepancy of energy band structure was thought to be the direct reason for the enhancement of optical transmission in reducing ambient. Hence, LaBaCo(2)O(5.5+δ) thin films show great prospect for applications on optical gas sensors in reducing/oxidizing atmosphere. Nature Publishing Group 2016-11-23 /pmc/articles/PMC5120332/ /pubmed/27876830 http://dx.doi.org/10.1038/srep37496 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Cheng, Sheng Lu, Jiangbo Han, Dong Liu, Ming Lu, Xiaoli Ma, Chunrui Zhang, Shengbai Chen, Chonglin Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films |
title | Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films |
title_full | Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films |
title_fullStr | Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films |
title_full_unstemmed | Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films |
title_short | Manipulation of Optical Transmittance by Ordered-Oxygen-Vacancy in Epitaxial LaBaCo(2)O(5.5+δ) Thin Films |
title_sort | manipulation of optical transmittance by ordered-oxygen-vacancy in epitaxial labaco(2)o(5.5+δ) thin films |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5120332/ https://www.ncbi.nlm.nih.gov/pubmed/27876830 http://dx.doi.org/10.1038/srep37496 |
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