High-Stability Silver Nanowire–Al2O3 Composite Flexible Transparent Electrodes Prepared by Electrodeposition

Nanomaterials

Zhuohui Xu¹  Dongxiang Luo²  Guoping Su³  Rihui Yao³  Hongfu Liang³  Taijiang Liu³  Zhihang Li³  Honglong Ning³  Junlong Chen³  Junbiao Peng³ 

[1] Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, Yulin Normal University, Yulin 537000, China;Laboratory for Clean Energy and Materials, Guangzhou Key Huangpu Hydrogen Innovation Center, School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou University, Guangzhou 510006, China;State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China;

关键词: silver nanowires;    Al₂O₃;    electrodeposition;    flexible transparent electrodes;    high-stability;   

DOI  :  10.3390/nano11113047

来源: DOAJ

【 摘 要 】

Silver nanowire (AgNW) conductive film fabricated by solution processing was investigated as an alternative to indium tin oxide (ITO) in flexible transparent electrodes. In this paper, we studied a facile and effective method by electrodepositing Al₂O₃ on the surface of AgNWs. As a result, flexible transparent electrodes with improved stability could be obtained by electrodepositing Al₂O₃. It was found that, as the annealing temperature rises, the Al₂O₃ coating layer can be transformed from Al₂O₃·H₂O into a denser amorphous state at 150 °C. By studying the increase of electrodeposition temperature, it was observed that the transmittance of the AgNW–Al₂O₃ composite films first rose to the maximum at 70 °C and then decreased. With the increase of the electrodeposition time, the figure of merit (FoM) of the composite films increased and reached the maximum when the time was 40 s. Through optimizing the experimental parameters, a high-stability AgNW flexible transparent electrode using polyimide (PI) as a substrate was prepared without sacrificing optical and electrical performance by electrodepositing at −1.1 V and 70 °C for 40 s with 0.1 mol/L Al(NO₃)₃ as the electrolyte, which can withstand a high temperature of 250 °C or 250,000 bending cycles with a bending radius of 4 mm.

【 授权许可】

Unknown