Electrochromic tunable filters based on nanotubes with viologen incorporation

Electrochromic tunable filters based on nanotubes with viologen incorporation
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基于掺入紫精的纳米管的电致变色可调谐滤光片

DOI:
10.1117/12.2307158
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
E. Oesterschulze
E. Oesterschulze
中科院分区:
--
文献类型:
--
作者:
A. Hein;C. Kortz;E. Oesterschulze

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电致变色器件具有结构紧凑、功耗低、控制电压小等优点,在微光学领域具有广阔的应用前景。然而,需要使用二氧化钛纳米粒子层(NPL)作为有效的电极材料仍然阻碍了微结构光学滤波器的发展,如可调光学虹膜。在这里,我们建议,通过电化学阳极氧化薄的微结构钛层获得的纳米管TiO 2电极,以取代TiO 2 NPL。这使得基于MEMS兼容工艺的电致变色滤波器装置的完整制造路线成为可能。过程控制将作为关键问题来解决,因为延长阳极氧化可能会导致TiO2纳米管膜的分层。对于电致变色紫精分子的化学吸附,回火过程是必要的,以将纳米管膜转变为电致变色相。最后,提出了一个全功能的圆盘形可调强度滤波器,依赖于紫精功能化的二氧化钛纳米管电极。
Electrochromic devices offer a wide potential in microoptics applications owing to their compact set-up, low power consumption, and small control voltage. However, the need to use TiO2nanoparticle layers (NPL) as efficient electrode material still prevents the development of microstructured optical filters like a tunable optical iris. Here we suggest to replace the TiO2NPL by a nanotube TiO2electrode obtained by electrochemical anodization of thin microstructured titanium layers. This renders the complete fabrication route of electrochromic filter devices on base of MEMS compatible processes possible. Process control will be addressed as critical issue because extended anodization may cause the delamination of the TiO2nanotube film. For the chemisorption of electrochromic viologen molecules a temper process is necessary to turn the nanotube film into the anatase phase. Finally, a fully functional disc shaped tunable intensity filter is presented that relies on the viologen functionalized titania nanotube electrode.
DOI: 10.1088/2040-8978/16/7/075301
发表时间: 2014-07-01
期刊: JOURNAL OF OPTICS
影响因子: 2.1
作者:
Deutschmann, T.;Oesterschulze, E.
通讯作者: Oesterschulze, E.
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