Low-voltage modulated inorganic smart windows using solid polymer electrolyte
- Authors
- Choi, Dahyun; Kim, Hyojun; Lee, Minji; Son, Minhee; Ahn, Sung-hoon; Lee, Sunyong Caroline
- Issue Date
- Sep-2019
- Publisher
- Elsevier BV
- Keywords
- The electrochromic device; Solid polymer electrolyte (SPE); Self-bleaching; Ferrocene
- Citation
- Solar Energy Materials and Solar Cells, v.200, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- Solar Energy Materials and Solar Cells
- Volume
- 200
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/2319
- DOI
- 10.1016/j.solmat.2019.109966
- ISSN
- 0927-0248
- Abstract
- We have developed a low-voltage modulated inorganic electrochromic device using a solid polymer electrolyte (SPE). UV-cured electrolytes with various ferrocene (Fc) concentrations of 0, 0.05, and 0.1 M were developed. The electrochromic evaluation of the device using an Fc concentration of 0.1 M indicated high transmittance changes of > 60% under a low potential change of 2.5 V due to the Fc in the electrolyte assisting with ion transfer to thin films, resulting in the lowest resistance within the device. Moreover, this electrochromic device, with an excellent self-bleaching effect, showed improved transmittance by 37% for 2000 s. We have fabricated a large smart window with a size of 20 x 20 cm(2) using the optimized conditions, with stable cyclic transmittance change up to 100 cycles upon a potential change of 2.5 V. Therefore, an electrochromic device with high transmittance difference and stable switching performance was successfully demonstrated using 0.1 M Fc-based SPE.
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