采用基于 WO3 的离子存储层的可扩展柔性电致变色器件,可增强光学调制和稳定性

IF 6.3 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Ade Satria Saloka Santosa, Nurul Kusuma Wardani, Muh Fadhil Albab, Muhammad Jahandar, Jinhee Heo, Dong Wook Chang, Soyeon Kim, Dong Chan Lim
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引用次数: 0

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Scalable flexible electrochromic devices with WO3-Based ion storage layer for enhanced optical modulation and stability

Scalable flexible electrochromic devices with WO3-Based ion storage layer for enhanced optical modulation and stability
Photo-electrochemical stability, rapid switching time, and mechanical durability are key factors in achieving high-performance flexible and large-area electrochromic (EC) devices. However, the typically used counter electrode of indium tin oxide (ITO) are prone to degradation after repeated redox cycling and reiterative bending stress. This study introduces a heterogeneous structure that incorporates modified poly(3,4-ethylenedioxythiophene) (m-PEDOT) as the organic electrochromic material and a tungsten trioxide (WO3) film in the counter electrode of ITO, which serves as both an ion storage layer and a protective layer. The WO3-based EC devices achieved a maximum optical modulation (ΔT) of 51 % at 631 nm, significantly higher than the 17 % (ΔT) observed in devices without WO3. Additionally, the device demonstrated fast switching times of 1.2 s for bleaching and 6.3 s for coloring, with a high coloring efficiency of 474 cm2/C. Durability tests revealed a 98 % recovery in optical modulation after 500 cycles, and strong mechanical stability after 100 bending cycles. The fabrication of a 1170 cm2 flexible device confirms the practical viability of this approach, enhancing both electrochemical and optical properties for large-scale applications such as smart windows.
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来源期刊
Applied Surface Science
Applied Surface Science 工程技术-材料科学:膜
CiteScore
12.50
自引率
7.50%
发文量
3393
审稿时长
67 days
期刊介绍: Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.
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