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Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition
Rapid progress in the performance of organic devices has increased the demand for advances in the technology of thin-film permeation barriers and understanding the failure mechanisms of these material systems. Herein, we report the extensive study of mechanical and gas barrier properties of Al(2)O(3...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359614/ https://www.ncbi.nlm.nih.gov/pubmed/30641884 http://dx.doi.org/10.3390/nano9010088 |
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author | Chawla, Vipin Ruoho, Mikko Weber, Matthieu Chaaya, Adib Abou Taylor, Aidan A. Charmette, Christophe Miele, Philippe Bechelany, Mikhael Michler, Johann Utke, Ivo |
author_facet | Chawla, Vipin Ruoho, Mikko Weber, Matthieu Chaaya, Adib Abou Taylor, Aidan A. Charmette, Christophe Miele, Philippe Bechelany, Mikhael Michler, Johann Utke, Ivo |
author_sort | Chawla, Vipin |
collection | PubMed |
description | Rapid progress in the performance of organic devices has increased the demand for advances in the technology of thin-film permeation barriers and understanding the failure mechanisms of these material systems. Herein, we report the extensive study of mechanical and gas barrier properties of Al(2)O(3)/ZnO nanolaminate films prepared on organic substrates by atomic layer deposition (ALD). Nanolaminates of Al(2)O(3)/ZnO and single compound films of around 250 nm thickness were deposited on polyethylene terephthalate (PET) foils by ALD at 90 °C using trimethylaluminium (TMA) and diethylzinc (DEZ) as precursors and H(2)O as the co-reactant. STEM analysis of the nanolaminate structure revealed that steady-state film growth on PET is achieved after about 60 ALD cycles. Uniaxial tensile strain experiments revealed superior fracture and adhesive properties of single ZnO films versus the single Al(2)O(3) film, as well as versus their nanolaminates. The superior mechanical performance of ZnO was linked to the absence of a roughly 500 to 900 nm thick sub-surface growth observed for single Al(2)O(3) films as well as for the nanolaminates starting with an Al(2)O(3) initial layer on PET. In contrast, the gas permeability of the nanolaminate coatings on PET was measured to be 9.4 × 10(−3) O(2) cm(3) m(−2) day(−1). This is an order of magnitude less than their constituting single oxides, which opens prospects for their applications as gas barrier layers for organic electronics and food and drug packaging industries. Direct interdependency between the gas barrier and the mechanical properties was not established enabling independent tailoring of these properties for mechanically rigid and impermeable thin film coatings. |
format | Online Article Text |
id | pubmed-6359614 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-63596142019-02-06 Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition Chawla, Vipin Ruoho, Mikko Weber, Matthieu Chaaya, Adib Abou Taylor, Aidan A. Charmette, Christophe Miele, Philippe Bechelany, Mikhael Michler, Johann Utke, Ivo Nanomaterials (Basel) Article Rapid progress in the performance of organic devices has increased the demand for advances in the technology of thin-film permeation barriers and understanding the failure mechanisms of these material systems. Herein, we report the extensive study of mechanical and gas barrier properties of Al(2)O(3)/ZnO nanolaminate films prepared on organic substrates by atomic layer deposition (ALD). Nanolaminates of Al(2)O(3)/ZnO and single compound films of around 250 nm thickness were deposited on polyethylene terephthalate (PET) foils by ALD at 90 °C using trimethylaluminium (TMA) and diethylzinc (DEZ) as precursors and H(2)O as the co-reactant. STEM analysis of the nanolaminate structure revealed that steady-state film growth on PET is achieved after about 60 ALD cycles. Uniaxial tensile strain experiments revealed superior fracture and adhesive properties of single ZnO films versus the single Al(2)O(3) film, as well as versus their nanolaminates. The superior mechanical performance of ZnO was linked to the absence of a roughly 500 to 900 nm thick sub-surface growth observed for single Al(2)O(3) films as well as for the nanolaminates starting with an Al(2)O(3) initial layer on PET. In contrast, the gas permeability of the nanolaminate coatings on PET was measured to be 9.4 × 10(−3) O(2) cm(3) m(−2) day(−1). This is an order of magnitude less than their constituting single oxides, which opens prospects for their applications as gas barrier layers for organic electronics and food and drug packaging industries. Direct interdependency between the gas barrier and the mechanical properties was not established enabling independent tailoring of these properties for mechanically rigid and impermeable thin film coatings. MDPI 2019-01-11 /pmc/articles/PMC6359614/ /pubmed/30641884 http://dx.doi.org/10.3390/nano9010088 Text en © 2019 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 Chawla, Vipin Ruoho, Mikko Weber, Matthieu Chaaya, Adib Abou Taylor, Aidan A. Charmette, Christophe Miele, Philippe Bechelany, Mikhael Michler, Johann Utke, Ivo Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition |
title | Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition |
title_full | Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition |
title_fullStr | Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition |
title_full_unstemmed | Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition |
title_short | Fracture Mechanics and Oxygen Gas Barrier Properties of Al(2)O(3)/ZnO Nanolaminates on PET Deposited by Atomic Layer Deposition |
title_sort | fracture mechanics and oxygen gas barrier properties of al(2)o(3)/zno nanolaminates on pet deposited by atomic layer deposition |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359614/ https://www.ncbi.nlm.nih.gov/pubmed/30641884 http://dx.doi.org/10.3390/nano9010088 |
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