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Optical Properties of Hydrated Tungsten Trioxide 3WO3ˑH2O
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.
Nanyang Technological University, Singapore.
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-9229-2028
Nanyang Technological University, Singapore.
2014 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 571, 644-647 p.Article in journal (Refereed) Published
Abstract [en]

Spectroscopic ellipsometry was used to determine the optical properties of plate-like hydrated tungsten trioxide (3WO3·H2O) films in the energy range 300–4000 cm− 1. Films with different thicknesses were deposited on glass substrates pre-coated with fluorine-doped tin oxide via an efficient and simple hydrothermal method. Parametric models were used to extract thicknesses and optical constants of the thin films. The WO3 was found to be more hydrated for thicker films. Moreover, the nano-plates are larger in thicker films, which leads to a decrease of the transmission due to an increase of the scattering. Features in the obtained dielectric functions of the 3WO3·H2O thin films were compared with the earlier published optical spectra of WO3 and its hydrates ½WO3·H2O and WO3·H2O.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 571, 644-647 p.
Keyword [en]
Ellipsometry; Dielectric function; Hydrated tungsten trioxide
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-106422DOI: 10.1016/j.tsf.2014.04.049ISI: 000346055200058OAI: oai:DiVA.org:liu-106422DiVA: diva2:715964
Available from: 2014-05-07 Created: 2014-05-07 Last updated: 2017-12-05

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