期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 196, 期 -, 页码 9-15出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2019.03.027
关键词
Sol-gel chemistry; WO3 layer; TMTU/[TMFDS](2+) redox couple; Solid electrolyte; Electrochromic device; Smart window
资金
- Operational Programme for the Implementation of the EU Cohesion Policy in the period 2014-2020
- Republic of Slovenia, the Ministry of Education, Science and Sport [C3330-16-529003]
A hybrid system in which the counter electrode is exchanged with a redox couple dissolved in the electrolyte is an alternative to a sandwich type electrochromic (EC) device. We have developed a solid redox (tetramethylthiourea/tetramethylformaminium disulfide dication TMTU/[TMFDS](2+)) electrolyte based on organically modified silane matrix. The EC device employing a solid electrolyte colors homogeneously, visible transmittance (T-vis) changes from 60% to 5%, at -1.5 V within less than 5 min when 240 nm cubic WO3 layer is employed. The results show that solidification of the electrolyte does not affect coloring kinetic, but the reduction of [TMFDS](2+) to TMTU at the Pt electrode significantly slows bleaching and reduces the self-bleaching of the device. Moreover, the EC device employing solid electrolyte colors homogeneously and is colorless in the bleached state (C, a and b values are below 10).
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