Optical Properties of Hydrated Tungsten Trioxide 3WO3ˑH2O

Valyukh, Iryna (författare): Linköpings universitet,Tillämpad optik,Tekniska högskolan

Arwin, Hans (författare): Linköpings universitet,Tillämpad optik,Tekniska högskolan

(creator_code:org_t)

Elsevier, 2014
2014
Engelska.
Ingår i: Thin Solid Films. - : Elsevier. - 0040-6090 .- 1879-2731. ; 571, s. 644-647

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Abstract Ämnesord

Stäng

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.

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