High-durability organic electrochromic devices based on in-situ-photocurable electrochromic materials
作者:Chang Gu、Shuo Wang、Jiale He、Yu-Mo Zhang、Sean Xiao-An Zhang
DOI:10.1016/j.chempr.2023.05.015
日期:2023.10
Electrochromic materials can undergo electrochemically driven redox processes resulting in optical signal changes, and they have shown attractive application potential in smart windows, wearable electronics, electronic papers, etc. However, their research and development (R&D) are still limited due to the lack of suitable materials and processing strategies to achieve high durability. Here, in-situ-photocurable
电致变色材料可以经历电化学驱动的氧化还原过程,从而导致光学信号变化,并且在智能窗户、可穿戴电子产品、电子纸等领域显示出诱人的应用潜力。然而,由于缺乏相关技术,其研究和开发(R&D)仍然受到限制。合适的材料和加工策略以实现高耐用性。在这里,设计并合成了原位光固化电致变色分子以克服上述挑战。与现有的掺杂模式和聚合模式相比,原位光固化电致变色薄膜和器件表现出优异的耐久性(例如,附着力、多维稳定性和>120天的全对比度日历寿命)和显着的综合性能(例如,透明度 = ∼90%,光学调制 = 72.7%,全对比度循环寿命 > 21,000)。此外,成功实现了用于微纳图案化的高分辨率电致变色光刻(可识别图案尺寸:~2μm,迄今为止最好的电致变色分辨率)。在此基础上,展示了多级信息加密和可调二次色的一些潜在应用。