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Study of the electrochromic properties of MAPLE and PLD deposited WO3 thin films
“Georgi Nadjakov” Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee Blvd., 1784 Sofia, Bulgaria.
National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, RO-77125, Magurele-Ilfov, Romania.
National Institute of Materials Physics, 405A Atomistilor Street, Magurele-Ilfov, RO-077125, Romania.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
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2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Tungsten trioxide (WO3) thin films were grown by matrix assisted pulsed laser evaporation (MAPLE) and pulsed laser deposition (PLD), and their properties were investigated for electrochromic applications. The structure, morphology and optical properties of these MAPLE and PLD grown from monoclinic WO3 nano-sized particles WO3 thin films were also studied. A KrF* excimer (λ=248 nm, ζFWHM=25 ns) laser source was used in all experiments. The films were studied by atomic force microscopy (AFM), grazing incidence X-ray diffraction (GIXRD) and Fourier transform infrared spectroscopy (FTIR). Cyclic voltammetry measurements were also performed in glove box with Ar atmosphere towards Li electrode, and the coloring and bleaching states were investigated. The morpho-structural investigations disclosed the synthesis of single-phase monoclinic WO3 films consisting of crystalline nano-grains embedded in an amorphous matrix. All thin films showed good electrochromic properties - strong coloration and fast and full bleaching. The effect was observed for many cycles, the strong coloration and full bleaching being preserved. These results are promising for future application of MAPLE and PLD deposited WO3 thin films in the development of electrochromic devices.

Place, publisher, year, edition, pages
2017.
Keyword [en]
matrix assisted pulsed laser evaporation, WO3, electrochromism
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics; Engineering Science with specialization in Materials Science
Identifiers
URN: urn:nbn:se:uu:diva-333099OAI: oai:DiVA.org:uu-333099DiVA: diva2:1155092
Conference
21st International Conference of Solid State Ionics, Padua, Italy, 18-23 June 2017.
Funder
EU, FP7, Seventh Framework Programme, 316309
Available from: 2017-11-06 Created: 2017-11-06 Last updated: 2017-11-14

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