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Diversity of TiO(2): Controlling the Molecular and Electronic Structure of Atomic-Layer-Deposited Black TiO(2)
[Image: see text] Visually black, electrically leaky, amorphous titania (am-TiO(2)) thin films were grown by atomic layer deposition (ALD) for photocatalytic applications. Broad spectral absorbance in the visible range and exceptional conductivity are attributed to trapped Ti(3+) in the film. Oxidat...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6727370/ https://www.ncbi.nlm.nih.gov/pubmed/30608653 http://dx.doi.org/10.1021/acsami.8b20608 |
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author | Ali-Löytty, Harri Hannula, Markku Saari, Jesse Palmolahti, Lauri Bhuskute, Bela D. Ulkuniemi, Riina Nyyssönen, Tuomo Lahtonen, Kimmo Valden, Mika |
author_facet | Ali-Löytty, Harri Hannula, Markku Saari, Jesse Palmolahti, Lauri Bhuskute, Bela D. Ulkuniemi, Riina Nyyssönen, Tuomo Lahtonen, Kimmo Valden, Mika |
author_sort | Ali-Löytty, Harri |
collection | PubMed |
description | [Image: see text] Visually black, electrically leaky, amorphous titania (am-TiO(2)) thin films were grown by atomic layer deposition (ALD) for photocatalytic applications. Broad spectral absorbance in the visible range and exceptional conductivity are attributed to trapped Ti(3+) in the film. Oxidation of Ti(3+) upon heat treatment leads to a drop in conductivity, a color change from black to white, and crystallization of am-TiO(2). ALD-grown black TiO(2), without any heat treatment, is subject to dissolution in alkaline photoelectrochemical conditions. The best photocatalytic activity for solar water splitting is obtained for completely crystalline white TiO(2). |
format | Online Article Text |
id | pubmed-6727370 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-67273702019-09-06 Diversity of TiO(2): Controlling the Molecular and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) Ali-Löytty, Harri Hannula, Markku Saari, Jesse Palmolahti, Lauri Bhuskute, Bela D. Ulkuniemi, Riina Nyyssönen, Tuomo Lahtonen, Kimmo Valden, Mika ACS Appl Mater Interfaces [Image: see text] Visually black, electrically leaky, amorphous titania (am-TiO(2)) thin films were grown by atomic layer deposition (ALD) for photocatalytic applications. Broad spectral absorbance in the visible range and exceptional conductivity are attributed to trapped Ti(3+) in the film. Oxidation of Ti(3+) upon heat treatment leads to a drop in conductivity, a color change from black to white, and crystallization of am-TiO(2). ALD-grown black TiO(2), without any heat treatment, is subject to dissolution in alkaline photoelectrochemical conditions. The best photocatalytic activity for solar water splitting is obtained for completely crystalline white TiO(2). American Chemical Society 2019-01-04 2019-01-23 /pmc/articles/PMC6727370/ /pubmed/30608653 http://dx.doi.org/10.1021/acsami.8b20608 Text en Copyright © 2019 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Ali-Löytty, Harri Hannula, Markku Saari, Jesse Palmolahti, Lauri Bhuskute, Bela D. Ulkuniemi, Riina Nyyssönen, Tuomo Lahtonen, Kimmo Valden, Mika Diversity of TiO(2): Controlling the Molecular and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) |
title | Diversity
of TiO(2): Controlling the Molecular
and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) |
title_full | Diversity
of TiO(2): Controlling the Molecular
and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) |
title_fullStr | Diversity
of TiO(2): Controlling the Molecular
and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) |
title_full_unstemmed | Diversity
of TiO(2): Controlling the Molecular
and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) |
title_short | Diversity
of TiO(2): Controlling the Molecular
and Electronic Structure of Atomic-Layer-Deposited Black TiO(2) |
title_sort | diversity
of tio(2): controlling the molecular
and electronic structure of atomic-layer-deposited black tio(2) |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6727370/ https://www.ncbi.nlm.nih.gov/pubmed/30608653 http://dx.doi.org/10.1021/acsami.8b20608 |
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