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Enhanced electrochromic switches and tunable green fluorescence based on terbium ion doped WO3 film

Abstract

Multifunctional WO3-based materials have been increasingly attracting attention due to their unique physical and electrochemical nature. In this work, the luminescence species, terbium (Tb) ions, were first successfully doped into WO3 films by a hydrothermal method to incorporate their electrochromic and photoluminescent functions. The amorphous state and porous net structure are introduced, which can be attributed to the inhibited orientation growth caused by the occupation of Tb ions in WO3 lattice. Here, the optimal 13% Tb-WO3 film demonstrates the enhanced electrochromic properties: a high transmittance modulation of 66.71%; fast response speed lower than 10 s; improved CE value of 48.33 cm2 C-1 at 680 nm; and cycling stability over 600 cycles without obvious degradation, arising from its larger, active surface area. Meanwhile, its green-colored emission could be realized under 260 nm UV light and is electro-switchable upon applying voltage.

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Supplementary files

Publication details

The article was received on 19 Jul 2019, accepted on 25 Oct 2019 and first published on 31 Oct 2019


Article type: Paper
DOI: 10.1039/C9NR06125H
Nanoscale, 2019, Accepted Manuscript

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    Enhanced electrochromic switches and tunable green fluorescence based on terbium ion doped WO3 film

    L. Shen, J. Zheng and C. Xu, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR06125H

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