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Sum-Frequency Generation Vibrational Spectroscopy Investigations of Phosphonic Acids on Anodic Aluminum Oxide Films
Johannes Kepler Univ Linz, Austria.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-0280-8017
Johannes Kepler Univ Linz, Austria.
2018 (English)In: Applied Spectroscopy, ISSN 0003-7028, E-ISSN 1943-3530, Vol. 72, no 5, p. 725-730Article in journal (Refereed) Published
Abstract [en]

Self-assembled monolayers of alkyl phosphonic acids on anodic aluminum oxide (AlOx) surfaces are important as dielectric layers in thin film electronic devices. Assessing the properties and quality of these monolayers on amorphous AlOx is limited to a few surface-sensitive methods. In this work, we study using nonlinear optical measurements the molecular ordering in n-alkyl phosphonic acids with various alkyl chain lengths (6 to 18 carbons) deposited on AlOx and show the influence of temperature on stability and conformational order. The results demonstrate that the octadecylphosphonic acid has fewest defects in the chain orientation. A detailed comparison of the longest and the shortest alkyl chain revealed different behavior in conformational ordering upon annealing.

Place, publisher, year, edition, pages
SAGE PUBLICATIONS INC , 2018. Vol. 72, no 5, p. 725-730
Keywords [en]
Nonlinear optics; sum-frequency generation; phosphonic acid; thin film electronics
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:liu:diva-148115DOI: 10.1177/0003702818756899ISI: 000432044500005PubMedID: 29436845OAI: oai:DiVA.org:liu-148115DiVA, id: diva2:1211254
Note

Funding Agencies|Austrian Federal Ministry of Science, Research and Economy; Austrian National Foundation for Research, Technology and Development

Available from: 2018-05-30 Created: 2018-05-30 Last updated: 2018-10-05

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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