Chen Tianrui, Yang Hui, Bai Shengchi, Zhang Yan, Guo Xingzhong
State Key Laboratory of Silicon Materials, School of Materials Science and Engineering of Zhejiang University, Hangzhou, 310027, People's Republic of China.
Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou 310058, People's Republic of China.
R Soc Open Sci. 2020 Jan 29;7(1):191571. doi: 10.1098/rsos.191571. eCollection 2020 Jan.
With polyol-synthesized silver nanoparticles (AgNPs) as raw materials, the silver electrodes with high conductivity were fabricated via a dip-coating method followed by sintering process, and the effects of the dip-coating and sintering process on the conductivity and surface roughness of silver electrodes were investigated in detail. The silver film with a thickness of 1.97 µm and a roughness of about 2 nm can be prepared after dip-coating at a pulling rate of 500 µm s for 40 coating times. The non-conductive dip-coated silver films are transformed into conductive silver electrodes after conventional sintering in a muffle oven, infrared sintering and microwave sintering, respectively. Compared with high sintering temperature and long sintering time of conventional sintering and infrared sintering, microwave sintering can achieve quick sintering of silver films to fabricate high conductive silver electrodes. The silver electrodes with a sheet resistance of 0.75 Ω sq and a surface roughness of less than 1 nm can be obtained after microwave sintering at 500 W for 50 s. The adjustable dip-coating method followed by quick microware sintering is an appropriate approach to prepare high conductive AgNPs-based electrodes for organic light-emitting diodes or other devices.
以多元醇合成的银纳米颗粒（AgNPs）为原料，通过浸涂法随后进行烧结工艺制备了高导电性的银电极，并详细研究了浸涂和烧结工艺对银电极导电性和表面粗糙度的影响。在以500 µm s的提拉速率浸涂40次后，可以制备出厚度为1.97 µm、粗糙度约为2 nm的银膜。分别经过马弗炉常规烧结、红外烧结和微波烧结后，非导电的浸涂银膜转变为导电银电极。与常规烧结和红外烧结的高烧结温度和长烧结时间相比，微波烧结能够实现银膜的快速烧结，以制备高导电性银电极。在500 W下微波烧结50 s后，可以获得方阻为0.75 Ω sq且表面粗糙度小于1 nm的银电极。可调浸涂法随后进行快速微波烧结是制备用于有机发光二极管或其他器件的高导电性基于AgNPs的电极的合适方法。
