Kim Dong Wook, Kwon Jihye, Kim Hyoung Seop, Jeong Unyong
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Republic of Korea.
Nano Lett. 2021 Jul 14;21(13):5819-5827. doi: 10.1021/acs.nanolett.1c01744. Epub 2021 Jun 30.
Stretchable electronics have been spotlighted as promising next-generation electronics. In order to drive a specific unit device in an integrated stretchable device, the interconnection of the device should be placed in a desired position and addressed individually. In addition, practical stretchable interconnection requires reliable stretchability, high conductivity, optical transparency, high resolution, and fast and large-scale production. This study proposes an approach to meet these requirements. We print the single wavy polymer nanofibers (NFs) in a desired position and convert them into metal NF interconnections. The nanoscale diameter and the wavy cylindrical shape of the metal NFs are the main reasons for the reliable stretchability and the excellent transparency. Using the stretchable metal NFs and the stretchable organic semiconductor NFs, an array of all-stretchable transparent NF-field effect transistors (NF-FETs) is demonstrated. The highly integrated NF-FET array (10 FETs/mm) shows uniform performance and good stability under repeated severe mechanical deformations.
可拉伸电子器件作为有前途的下一代电子器件受到了关注。为了驱动集成可拉伸器件中的特定单元器件，器件的互连应放置在所需位置并单独寻址。此外，实用的可拉伸互连需要可靠的拉伸性、高导电性、光学透明度、高分辨率以及快速大规模生产。本研究提出了一种满足这些要求的方法。我们在所需位置打印单个波浪形聚合物纳米纤维（NFs），并将它们转化为金属NF互连。金属NFs的纳米级直径和波浪形圆柱形状是实现可靠拉伸性和优异透明度的主要原因。利用可拉伸金属NFs和可拉伸有机半导体NFs，展示了全可拉伸透明NF场效应晶体管（NF-FETs）阵列。高度集成的NF-FET阵列（10个FET/mm）在反复严重机械变形下表现出均匀的性能和良好的稳定性。
