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학술지 New Switchable Mirror Device with a Counter Electrode based on Reversible Electrodeposition
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저자
조성목, 김수정, 김태엽, 아칠성, 송주희, 전상훈, 김주연, 류호준, 김용해, 황치선, 이정익
발행일
201806
출처
Solar Energy Materials & Solar Cells, v.179, pp.161-168
ISSN
0927-0248
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.solmat.2017.11.007
협약과제
17HB1700, 고해상도 광대역 실감 입체 영상용 소재 및 소자 기술, 김태엽
초록
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 제안 키워드
Active area, Ag deposition, Ag film, Continuous current, Conventional devices, Cu ions, Scale up, Size scale, Switchable mirror, Working electrode, counter electrode