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首页> 外文期刊>ACS applied materials & interfaces >Bifunctional MoO3-WO3/Ag/MoO3-WO3 Films for Efficient ITO-Free Electrochromic Devices
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Bifunctional MoO3-WO3/Ag/MoO3-WO3 Films for Efficient ITO-Free Electrochromic Devices

机译:用于高效无ITO电致变色器件的双功能MoO3-WO3 / Ag / MoO3-WO3膜

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摘要

Dielectric-metal-dielectric (DMD) trilayer films, served as both electrochromic (EC) film and transparent conductor (TC), have exhibited great potential application in low-cost, ITO-free electrochromic devices (ECDs). However, recent reports on the DMD-based ECDs revealed that the response time and the optical modulation properties were not very satisfactory. Here, the mixed MoO3-WO3 materials were first introduced as the dielectric layer to construct an EC-TC bifunctional MoO3-WO3/Ag/MoO3-WO3 (MWAMW) film, which demonstrates strong and broad-band optical modulation in the visible light region, fast color-switching time (2.7 s for coloration and 4.1 s for bleaching), along with high coloration efficiency (70 cm(2) C-1). The electrical structure and electrochemical reaction kinetics analysis revealed that the improved EC performances are associated with the increased electron intervalence transition together with the fast charge transfer and ion-diffusion dynamics.
机译:既用作电致变色(EC)膜又用作透明导体(TC)的介电金属-介电(DMD)三层膜在低成本,不含ITO的电致变色器件(ECD)中显示出巨大的潜在应用。但是,有关基于DMD的ECD的最新报道表明,响应时间和光调制特性不是很令人满意。在这里,首先引入混合的MoO3-WO3材料作为介电层,以构建EC-TC双功能MoO3-WO3 / Ag / MoO3-WO3(MWAMW)膜,该膜在可见光区域表现出强大的宽带光学调制能力,快速的颜色切换时间(用于着色的时间为2.7 s,用于漂白的时间为4.1 s),以及高的着色效率(70 cm(2)C-1)。电气结构和电化学反应动力学分析表明,改进的EC性能与增加的电子间隔跃迁以及快速的电荷转移和离子扩散动力学有关。

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