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Two-step Fabrication of NaxWO3 Thin Film via oxygen-vacancy-induced Effect for Energy Efficient Applications

Abstract

Developing solar modulation materials such alkali tungsten bronzes with high-performance and low-cost fabrication is remarkably important for energy-saving project applications to our modern life. In this paper, sodium tungsten bronze (NaxWO3) film was fabricated by a novel approach using a two-step method. The amorphous sub-stoichiometric WO3-x (0< x< 1) film was deposited on glass using magnetron sputtering and then formed NaxWO3 after post-annealing treatment. The oxygen vacancies and tunnels existing in WO3-x receive such ions as Na+, O2-, etc. that diffused from glass substrate. The Na+ ion enters into the tunnels among WO6 octahedra. The O2- ion combines with oxygen vacancy. The NaxWO3 film exhibits excellent infrared shielding performance with less than 10 % infrared transmittance and high transmittance for visible lights, as well as blocking UV light completely. Compared with traditional wet chemistry methods, this approach is much more concise, and low-cost, which has a huge potential application for energy saving project.

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Publication details

The article was received on 11 May 2017, accepted on 19 Jun 2017 and first published on 19 Jun 2017


Article type: Paper
DOI: 10.1039/C7CE00896A
Citation: CrystEngComm, 2017, Accepted Manuscript
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    Two-step Fabrication of NaxWO3 Thin Film via oxygen-vacancy-induced Effect for Energy Efficient Applications

    Y. Xin, X. Cao, S. Bao, S. Ji, R. Li, Y. Yang, H. Zhou and P. Jin, CrystEngComm, 2017, Accepted Manuscript , DOI: 10.1039/C7CE00896A

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