Colorful Electrochromic Displays with High Visual Quality Based on Porous Metamaterials,Advanced Materials

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Colorful Electrochromic Displays with High Visual Quality Based on Porous Metamaterials
Advanced Materials ( IF 27.4 ) Pub Date : 2023-03-15 , DOI: 10.1002/adma.202300116
Yaowu Li _{1,

2} , Peiyan Sun ₁ , Jian Chen ₁ , Xiuling Zha _{1,

2} , Xueqing Tang ₁ , Zhiwei Chen ₁ , Yanan Zhang ₃ , Shan Cong _{1,

4} , Fengxia Geng ₃ , Zhigang Zhao _{1,

2}

Affiliation

The introduction of metamaterials into electrochromic (EC) displays has recently inspired a great breakthrough in the EC field, as this can offer a variety of new attractive features, from a very wide gamut of colors to very fast switching times. However, such metamaterial-based EC displays still face significant constraints when developing from single electrodes to full devices, because other supportive components in devices, such as counter electrodes and electrolytes, significantly affect light propagation and the subsequent perceived color quality in metamaterial-based EC devices. Herein, a new, cost-effective device design structured around a new type of porous metamaterial is reported to circumvent the critical problem in metamaterial-based EC displays. Owing to its unique design, the metamaterial-based EC device achieves good color quality with no drop in brightness or shift in color chromaticity when compared with a single electrode. Moreover, the porous-metamaterial-based EC device can exhibit non-iridescence and be viewed from a wide range of angles (5°–85°) and has fast switching response (2.4 and 2.5 s for coloration and bleaching, respectively), excellent cycling performance (at least 2000 cycles), and extremely low power consumption (4.0 mW cm⁻²).

中文翻译：

基于多孔超材料的具有高视觉质量的彩色电致变色显示器

将超材料引入电致变色 (EC) 显示器最近激发了 EC 领域的重大突破，因为这可以提供各种新的有吸引力的功能，从非常宽的色域到非常快的切换时间。然而，这种基于超材料的 EC 显示器在从单电极发展到完整设备时仍然面临重大限制，因为设备中的其他支持组件（例如对电极和电解质）会显着影响基于超材料的 EC 中的光传播和随后的感知颜色质量设备。在此，据报道，一种围绕新型多孔超材料构建的新型、具有成本效益的设备设计可以规避基于超材料的 EC 显示器中的关键问题。由于其独特的设计，与单个电极相比，基于超材料的 EC 设备实现了良好的颜色质量，亮度没有下降或颜色色度没有变化。此外，基于多孔超材料的 EC 设备可以表现出非虹彩，可以从很宽的角度（5°–85°）观察，并且具有快速的切换响应（着色和漂白分别为 2.4 和 2.5 s），非常好循环性能（至少 2000 次循环）和极低的功耗（4.0 mW cm^-2）。

更新日期：2023-03-15

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