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Journal Article New Switchable Mirror Device with a Counter Electrode based on Reversible Electrodeposition
Cited 36 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Seong M. Cho, Sujung Kim, Tae-Youb Kim, Chil Seong Ah, Juhee Song, Sang Hoon Cheon, Joo Yeon Kim, Hojun Ryu, Yong-Hae Kim, Chi-Sun Hwang, Jeong-Ik Lee
Issue Date
2018-06
Citation
Solar Energy Materials & Solar Cells, v.179, pp.161-168
ISSN
0927-0248
Publisher
Elsevier
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1016/j.solmat.2017.11.007
Abstract
A new structure for a switchable mirror device based on reversible electrodeposition is proposed. This device does not contain Cu ions in the electrolyte and adapts a counter electrode. The feasibility of the device was evaluated with a WO3 film, which is a well-known electrochromic material, as a counter electrode. Even in the absence of Cu ions, the WO3 film facilitates a clean erase feature in the device. Furthermore, using a pre-deposited Ag film as a working electrode, Ag deposition can be driven at a substantially lower voltage than that in conventional devices. Moreover the deposition current decreases with the progress of Ag deposition, and stops after completion of the deposition process. The results clearly indicate that the tri-bromine ion, which makes the self-erasing circulation, is not generated during Ag deposition process. The new switchable mirror shows excellent bistability and size scale-up is possible because it does not consume continuous current in the mirror state. By appling the proposed technology, a switchable mirror device with a 7 cm × 9 cm active area was successfully fabricated.
KSP Keywords
Active area, Ag deposition, Ag film, Continuous current, Conventional devices, Cu ions, Scale-up, Size scale, Switchable mirror, Working electrode, counter electrode