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Catalytic Metasurfaces Empowered by Bound States in the Continuum
[Image: see text] Photocatalytic platforms based on ultrathin reactive materials facilitate carrier transport and extraction but are typically restricted to a narrow set of materials and spectral operating ranges due to limited absorption and poor energy-tuning possibilities. Metasurfaces, a class o...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9413421/ https://www.ncbi.nlm.nih.gov/pubmed/35953078 http://dx.doi.org/10.1021/acsnano.2c05680 |
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author | Hu, Haiyang Weber, Thomas Bienek, Oliver Wester, Alwin Hüttenhofer, Ludwig Sharp, Ian D. Maier, Stefan A. Tittl, Andreas Cortés, Emiliano |
author_facet | Hu, Haiyang Weber, Thomas Bienek, Oliver Wester, Alwin Hüttenhofer, Ludwig Sharp, Ian D. Maier, Stefan A. Tittl, Andreas Cortés, Emiliano |
author_sort | Hu, Haiyang |
collection | PubMed |
description | [Image: see text] Photocatalytic platforms based on ultrathin reactive materials facilitate carrier transport and extraction but are typically restricted to a narrow set of materials and spectral operating ranges due to limited absorption and poor energy-tuning possibilities. Metasurfaces, a class of 2D artificial materials based on the electromagnetic design of nanophotonic resonators, allow optical absorption engineering for a wide range of materials. Moreover, tailored resonances in nanostructured materials enable strong absorption enhancement and thus carrier multiplication. Here, we develop an ultrathin catalytic metasurface platform that leverages the combination of loss-engineered substoichiometric titanium oxide (TiO(2–x)) and the emerging physical concept of optical bound states in the continuum (BICs) to boost photocatalytic activity and provide broad spectral tunability. We demonstrate that our platform reaches the condition of critical light coupling in a TiO(2–x) BIC metasurface, thus providing a general framework for maximizing light–matter interactions in diverse photocatalytic materials. This approach can avoid the long-standing drawbacks of many naturally occurring semiconductor-based ultrathin films applied in photocatalysis, such as poor spectral tunability and limited absorption manipulation. Our results are broadly applicable to fields beyond photocatalysis, including photovoltaics and photodetectors. |
format | Online Article Text |
id | pubmed-9413421 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-94134212022-08-27 Catalytic Metasurfaces Empowered by Bound States in the Continuum Hu, Haiyang Weber, Thomas Bienek, Oliver Wester, Alwin Hüttenhofer, Ludwig Sharp, Ian D. Maier, Stefan A. Tittl, Andreas Cortés, Emiliano ACS Nano [Image: see text] Photocatalytic platforms based on ultrathin reactive materials facilitate carrier transport and extraction but are typically restricted to a narrow set of materials and spectral operating ranges due to limited absorption and poor energy-tuning possibilities. Metasurfaces, a class of 2D artificial materials based on the electromagnetic design of nanophotonic resonators, allow optical absorption engineering for a wide range of materials. Moreover, tailored resonances in nanostructured materials enable strong absorption enhancement and thus carrier multiplication. Here, we develop an ultrathin catalytic metasurface platform that leverages the combination of loss-engineered substoichiometric titanium oxide (TiO(2–x)) and the emerging physical concept of optical bound states in the continuum (BICs) to boost photocatalytic activity and provide broad spectral tunability. We demonstrate that our platform reaches the condition of critical light coupling in a TiO(2–x) BIC metasurface, thus providing a general framework for maximizing light–matter interactions in diverse photocatalytic materials. This approach can avoid the long-standing drawbacks of many naturally occurring semiconductor-based ultrathin films applied in photocatalysis, such as poor spectral tunability and limited absorption manipulation. Our results are broadly applicable to fields beyond photocatalysis, including photovoltaics and photodetectors. American Chemical Society 2022-08-11 2022-08-23 /pmc/articles/PMC9413421/ /pubmed/35953078 http://dx.doi.org/10.1021/acsnano.2c05680 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Hu, Haiyang Weber, Thomas Bienek, Oliver Wester, Alwin Hüttenhofer, Ludwig Sharp, Ian D. Maier, Stefan A. Tittl, Andreas Cortés, Emiliano Catalytic Metasurfaces Empowered by Bound States in the Continuum |
title | Catalytic Metasurfaces
Empowered by Bound States in
the Continuum |
title_full | Catalytic Metasurfaces
Empowered by Bound States in
the Continuum |
title_fullStr | Catalytic Metasurfaces
Empowered by Bound States in
the Continuum |
title_full_unstemmed | Catalytic Metasurfaces
Empowered by Bound States in
the Continuum |
title_short | Catalytic Metasurfaces
Empowered by Bound States in
the Continuum |
title_sort | catalytic metasurfaces
empowered by bound states in
the continuum |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9413421/ https://www.ncbi.nlm.nih.gov/pubmed/35953078 http://dx.doi.org/10.1021/acsnano.2c05680 |
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