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Morphology, mechani...
Morphology, mechanical stability, and protective properties of ultrathin gallium oxide coatings
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- Lawrenz, F. (författare)
- Universität Greifswald,University of Greifswald
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- Lange, P. (författare)
- Humboldt-Universität zu Berlin,Humboldt University of Berlin
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- Severin, N. (författare)
- Humboldt-Universität zu Berlin,Humboldt University of Berlin
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- Rabe, J.P. (författare)
- Humboldt-Universität zu Berlin,Humboldt University of Berlin
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- Helm, C. A. (författare)
- Universität Greifswald,University of Greifswald
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- Block, Stephan, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2015-05-18
- 2015
- Engelska.
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Ingår i: Langmuir. - : American Chemical Society (ACS). - 1520-5827 .- 0743-7463. ; 31:21, s. 5836-5842
- Relaterad länk:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Ultrathin gallium oxide layers with a thickness of 2.8 ± 0.2 nm were transferred from the surface of liquid gallium onto solid substrates, including conjugated polymer poly(3-hexylthiophene) (P3HT). The gallium oxide exhibits high mechanical stability, withstanding normal pressures of up to 1 GPa in contact mode scanning force microscopy imaging. Moreover, it lowers the rate of photodegradation of P3HT by 4 orders of magnitude, as compared to uncovered P3HT. This allows us to estimate the upper limits for oxygen and water vapor transmission rates of 0.08 cm3 m-2 day-1 and 0.06 mg m-2 day-1, respectively. Hence, similar to other highly functional coatings such as graphene, ultrathin gallium oxide layers can be regarded as promising candidates for protective layers in flexible organic (opto-)electronics and photovoltaics because they offer permeation barrier functionalities in conjunction with high optical transparency.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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