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Issue 47, 2019
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Enhanced electrochromic switches and tunable green fluorescence based on terbium ion doped WO3 films

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Abstract

Multifunctional WO3-based materials have been increasingly attracting attention due to their unique physical and electrochemical nature. In this work, the luminescent 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 the WO3 lattice. Here, the optimal 13% Tb-WO3 film exhibits enhanced electrochromic properties: a high transmittance modulation of 66.71%; a fast response speed of less than 10 s; an improved CE value of 48.33 cm2 Cāˆ’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.

Graphical abstract: Enhanced electrochromic switches and tunable green fluorescence based on terbium ion doped WO3 films

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Supplementary files

Article information


Submitted
19 Jul 2019
Accepted
25 Oct 2019
First published
31 Oct 2019

Nanoscale, 2019,11, 23049-23057
Article type
Paper

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

L. Shen, J. Zheng and C. Xu, Nanoscale, 2019, 11, 23049
DOI: 10.1039/C9NR06125H

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