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학술지 Graphene Electrode Enabling Electrochromic Approaches for Daylight-Dimming Applications
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저자
김주연, 조남성, 조승민, 김기수, 전상훈, 김규원, 강승열, 조성목, 이정익, 오지영, 김용해, 류호준, 황치선, 김수정, 아칠성, 김태엽
발행일
201803
출처
Scientific Reports, v.8, pp.1-8
ISSN
2045-2322
출판사
Nature Publishing Group
DOI
https://dx.doi.org/10.1038/s41598-018-22274-0
협약과제
18HB1600, 고해상도 광대역 실감 입체 영상용 소재 및 소자 기술, 김태엽
초록
For environmental reason, buildings increasingly install smart windows, which can dim incoming daylight based on active electrochromic devices (ECDs). In this work, multi-layered graphene (MLG) was investigated as an ECD window electrode, to minimize carbon dioxide (CO2) emissions by decreasing the electricity consumption for building space cooling and heating and as an alternative to the transparent conductor tin-doped indium oxide (ITO) in order to decrease dependence on it. Various MLG electrodes with different numbers of graphene layers were prepared with environmentally friendly poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) to produce ECD cells. Tests demonstrated the reproducibility and uniformity in optical performance, as well as the flexibility of the ECD fabrication. With the optimized MLG electrode, the ECD cells exhibited a very fast switching response for optical changes from transparent to dark states of a few hundred msec.
KSP 제안 키워드
4-Ethylenedioxythiophene(EDOT), Building space, Cooling and heating, Electricity Consumption, Electrochromic device(ECD), Environmentally friendly, Fast switching, Graphene layers, Multi-layered graphene, Space cooling, carbon dioxide