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

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Enhanced electrochromic switches and tunable green fluorescence based on terbium ion doped WO3 films.
Nanoscale ( IF 5.8 ) Pub Date : 2019-11-27 , DOI: 10.1039/c9nr06125h
Luying Shen ₁ , Jianming Zheng ₁ , Chunye Xu ₁

Affiliation

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 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.

中文翻译：

基于ter离子掺杂的WO3薄膜的增强的电致变色开关和可调的绿色荧光。

多功能基于WO3的材料由于其独特的物理和电化学性质而受到越来越多的关注。在这项工作中，首先通过水热方法将发光物种，（Tb）离子成功地掺杂到WO3薄膜中，以结合其电致变色和光致发光功能。引入了非晶态和多孔网状结构，这可以归因于WO 3晶格中Tb离子的占据导致取向生长受到抑制。在此，最佳的13％Tb-WO3薄膜具有增强的电致变色性能：66.71％的高透射率调制；小于10秒的快速响应速度；在680 nm处的CE值提高到48.33 cm2 C-1；循环寿命超过600次，循环稳定性稳定，不会出现明显的退化。同时，

更新日期：2019-12-05

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