高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (4): 1074.doi: 10.7503/cjcu20200644

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柔性电子学中的表界面化学

姬少博, 陈晓东()   

  1. 南洋理工大学材料科学与工程学院, 新加坡 639798
  • 收稿日期:2020-09-02 出版日期:2021-04-10 发布日期:2020-11-10
  • 通讯作者: 陈晓东 E-mail:chenxd@ntu.edu.sg

Surface and Interface Chemistry in Flexible Electronics

JI Shaobo, CHEN Xiaodong()   

  1. School of Materials Science and Engineering,Nanyang Technological University,Singapore 639798,Singapore
  • Received:2020-09-02 Online:2021-04-10 Published:2020-11-10
  • Contact: CHEN Xiaodong E-mail:chenxd@ntu.edu.sg

摘要:

柔性电子作为新兴的研究热点, 涉及材料、 化学、 物理等多个基础学科的交叉, 以及在生物医用、 可穿戴设备及人工智能等多个领域的应用. 柔性电子设备的制造加工过程中会用到弹性基底、 导电层、 功能层等多种性质各异的材料, 其互相之间的整合受到它们表面性质和界面结合力的限制; 器件的功能、 可靠性、 对环境的敏感性等也受到了器件表界面性质的影响; 因此, 对材料和器件表界面的处理在柔性电子学中具有重要作用. 本文对柔性电子学中常用的表界面化学过程分为3大类进行介绍: 表面电化学过程, 基于特定化合物反应产生的电流制备电化学传感器, 利用电流/电压控制表面负载化合物; 表面修饰, 通过表面改性提高材料的加工性能, 共价修饰分子层或其它材料赋予器件特殊功能性质或保护层; 不同材料之间的界面连接, 通过共价连接或化学反应辅助的物理交联实现不同材料的结合, 提高柔性器件的稳定性, 实现柔性设备的整合. 对各应用进行总结和举例后, 讨论了存在的问题, 并对未来的发展方向及前景进行了展望.

关键词: 柔性电子学, 电化学传感, 表面修饰, 界面连接

Abstract:

Flexible electronics is an emerging research hotspot, which involves chemistry, physics, mate- rials, etc.. As an interdisciplinary topic, flexible electronics have been used in various fields, such as wea-rable devices, bio-medical applications, artificial intelligence. The fabrication of flexible devices requires the integration of different materials including flexible substrates, conductive materials, and functional components. Their integration is limited by their surface properties and interfacial interactions, their function and reliability are also influenced by the stability of their interfacial bindings. Thus surface and interface treatments, including chemical treatments, are important for fabrication and functionalization of flexible electronic devi-ces. In this review, the application of surface/interface chemistry in flexible electronics will be cataloged into 3 types. Firstly, electrochemical reactions on surface, which are the bases for flexible chemical sensors and can be used to control the loading/release of chemicals on device surfaces. Secondly, surface modification, which can improve the processability of materials by varying their surface properties, and endow the devices with specific properties, functions, or protections. Lastly, interfacial connections, which link different materials and layers through covalent bonding or chemical process assisted physical entanglement, to improve the stability of the whole device. Summary and examples for each type will be given, followed by discussion of existing problems, possible future developments, and application potentials.

Key words: Flexible electronics, Electrochemical sensing, Surface modification, Interfacial connection

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