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Nanopatterned zinc titanate thin films prepared by the evaporation-induced self-assembly process
Åbo Akademi University, Finland.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Material och ytteknik. Åbo Akademi University, Finland.ORCID iD: 0000-0002-4746-6559
Åbo Akademi University, Finland; University of Ulm, Germany.
Åbo Akademi University, Finland.
2013 (English)In: Thin Solid Films, ISSN 0040-609, Vol. 531, p. 222-227Article in journal (Refereed) Published
Abstract [en]

Nanopatterned thin films prepared by the evaporation-induced self-assembly process have up to now been limited to a few transition metal oxides (i.e. Al2O3, TiO2 and ZrO2). Here we describe the formation of zinc titanate nanoperforated thin films with different Zn/Ti ratios using the dipcoating process. Atomic force microscopy and scanning electron microscopy reveal that the structure consists of well-ordered pseudohexagonal nanoperforations in the range of 30 nm in diameter separated by 25 nm wide metal oxide ridges, while the film thickness is close to 2 nm. For films with a zinc precursor content up to 50 mol%, the well-organized structure of the thin film can be maintained, while at higher Zn contents the nanostructure is gradually becoming more disordered, which we have shown is consistent with the partial charge model. Grazing incidence X-ray diffraction measurements on the films calcined at 700 C indicate that the anatase phase of the pure TiO2 films is gradually consumed at the expense of a newly formed Zn2Ti3O8 phase upon increasing the Zn/Ti ratio in the starting precursor solution. The unique combination of the nanostructure with the zinc titanate composition grants these nanopatterned thin films significant application prospects in for instance optics and catalysis. 

Place, publisher, year, edition, pages
2013. Vol. 531, p. 222-227
Keywords [en]
Block copolymer template, Crystal phase, Dipcoating, Evaporation-induced self-assembly, Gracing-incidence X-ray diffraction, Nanopatterning, Thin film, Zinc titanate
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-6530DOI: 10.1016/j.tsf.2013.01.085Scopus ID: 2-s2.0-84875418893Local ID: 23806OAI: oai:DiVA.org:ri-6530DiVA, id: diva2:964368
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2023-05-25Bibliographically approved

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