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An Ultrastretchable Reflective Electrode Based on a Liquid Metal Film for Deformable Optoelectronics
ACS Materials Letters ( IF 9.6 ) Pub Date : 2021-06-30 , DOI: 10.1021/acsmaterialslett.1c00216
Jiaxue Zhang 1, 2 , Qianying Lu 1, 2 , Yanyan Li 1, 2 , Tingyu Li 1, 2 , Ming-Hui Lu 1 , Yan-Feng Chen 1 , Desheng Kong 1, 2
Affiliation  

Stretchable optoelectronics represent an emerging technology featuring soft mechanical properties. The advancements in this active area rely on the development of compliant electronic materials. Currently, the deformable forms of light-emitting devices often exhibit double-side emissions due to the lack of stretchable reflective electrodes. This study reports a facile procedure to deposit smooth and uniform liquid metal films over large-area elastomeric substrates as stretchable reflective electrodes. The as-prepared electrodes exhibit low sheet resistance (0.15 Ω sq–1), high optical reflectance (95% at 550 nm), and ultrahigh deformability (500% strain). The electrode shows sufficient durability to survive repetitive tensile deformations. Successful implementation of a liquid metal electrode in a stretchable light-emitting device achieves single-side emission with enhanced light extraction. The stretchable reflective electrode reported here represents a key building component to enable a broad range of applications such as deformable lighting, wearable displays, and soft robotics.

中文翻译:

基于液态金属薄膜的超拉伸反射电极用于可变形光电子学

可拉伸光电子学代表了一种具有软机械性能的新兴技术。这一活跃领域的进步依赖于合规电子材料的开发。目前,由于缺乏可拉伸的反射电极,可变形形式的发光器件通常表现出双面发射。该研究报告了一种在大面积弹性基材上沉积光滑均匀的液态金属薄膜作为可拉伸反射电极的简便方法。所制备的电极表现出低薄层电阻 (0.15 Ω sq –1)、高光学反射率(550 nm 处为 95%)和超高变形能力(500% 应变)。电极显示出足够的耐久性以承受重复的拉伸变形。液态金属电极在可拉伸发光器件中的成功实现实现了单侧发射并增强了光提取。此处报道的可拉伸反射电极代表了一个关键的构建组件,可实现广泛的应用,如可变形照明、可穿戴显示器和软机器人。
更新日期:2021-08-02
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