On the role of micro-porosity in affecting the environmental stability of atomic/molecular layer deposited (ZnO) : A (Zn-O-C 6 H 4 -O) b films

Morteza Aghaee (Corresponding author), Janne Petteri Niemelä, Wilhelmus M.M. Kessels, Mariadriana Creatore

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Atomic/molecular layer deposited (ALD/MLD) inorganic-organic thin films form a novel class of materials with tunable properties. In selected cases, hybrid materials are reported to show environmental instability, specifically towards moisture. In this article, we focus on zinc oxide/zincone multi-layers with the theoretical formula of (ZnO) a (Zn-O-C 6 H 4 -O) b . We show by means of ellipsometric porosimetry that micro-porosity in the range of 0.42 and 2 nm in the pristine zincone layer is responsible for its environmental degradation. During degradation, it is found that a relative micro-porosity content of 1.2 ± 0.1 vol% in the pristine zincone films evolves into micro-mesoporosity with a relative content of 39 ± 1 vol%. We also show that the micro-porosity in the zincone layer can be gradually suppressed when few cycles (a = 1-10) of ZnO are introduced. The resulting (ZnO) a (Zn-O-C 6 H 4 -O) b = 1 periodic multilayer is an environmentally stable film with a = 10. It is found that the suppressed micro-porosity is due to the development of continuous ZnO layers with a ≥ 10.

Originele taal-2Engels
Pagina's (van-tot)3496-3505
Aantal pagina's10
TijdschriftDalton Transactions
Volume48
Nummer van het tijdschrift10
DOI's
StatusGepubliceerd - 14 feb 2019

Vingerafdruk

Microporosity
Zinc Oxide
Hybrid materials
Weathering
Multilayers
Moisture
Degradation
Thin films

Citeer dit

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abstract = "Atomic/molecular layer deposited (ALD/MLD) inorganic-organic thin films form a novel class of materials with tunable properties. In selected cases, hybrid materials are reported to show environmental instability, specifically towards moisture. In this article, we focus on zinc oxide/zincone multi-layers with the theoretical formula of (ZnO) a (Zn-O-C 6 H 4 -O) b . We show by means of ellipsometric porosimetry that micro-porosity in the range of 0.42 and 2 nm in the pristine zincone layer is responsible for its environmental degradation. During degradation, it is found that a relative micro-porosity content of 1.2 ± 0.1 vol{\%} in the pristine zincone films evolves into micro-mesoporosity with a relative content of 39 ± 1 vol{\%}. We also show that the micro-porosity in the zincone layer can be gradually suppressed when few cycles (a = 1-10) of ZnO are introduced. The resulting (ZnO) a (Zn-O-C 6 H 4 -O) b = 1 periodic multilayer is an environmentally stable film with a = 10. It is found that the suppressed micro-porosity is due to the development of continuous ZnO layers with a ≥ 10.",
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On the role of micro-porosity in affecting the environmental stability of atomic/molecular layer deposited (ZnO) : A (Zn-O-C 6 H 4 -O) b films. / Aghaee, Morteza (Corresponding author); Niemelä, Janne Petteri; Kessels, Wilhelmus M.M.; Creatore, Mariadriana.

In: Dalton Transactions, Vol. 48, Nr. 10, 14.02.2019, blz. 3496-3505.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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AU - Niemelä, Janne Petteri

AU - Kessels, Wilhelmus M.M.

AU - Creatore, Mariadriana

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