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Aluminum?Doped ZnO Weld Silver Nanowires?Based High Transmittance, Low Sheet Resistance, and Tough Composite Transparent Conductive Films

Herein, transparent conductive films (TCFs) with excellent optoelectronic properties (The sheet resistance of the TCF is as low as 12.9???sq?1 at an optical transmittance of 92.1%.) are prepared by an all?solution method. And the crystallization process of aluminum?doped ZnO prepared by the gel?sol method promotes the welding at the junction of silver nanowires.Herein, silver nanowires (AgNWs) and aluminum?doped zinc oxide (AZO) are prepared by polyol and gel?sol method, respectively. Then bendable, strong adhesion, flat, and high optical transmittance AgNWs:AZO composite transparent conductive film (TCF) is prepared in an all?solution method. By spinning the AZO to the upper layer of the AgNW networks and annealing at 120??C for 20?min, the junctions of the AgNW networks are welded by the capillary force in the solvent evaporation and AZO crystallization process. The sheet resistance of the TCF is as low as 12.9???sq?1 at an optical transmittance of 92.1% (@550?nm), which is comparable to the indium tin oxide film on glass. The root means square roughness is reduced from 30.1 to 8.48?nm to match the criteria as anode for organic light emitting diodes (OLEDs). Furthermore, the adhesion between the AgNW networks and the substrate has been significantly improved. Finally, a flexible green OLED device with AgNW:AZO TCF as the anode is successfully prepared. The maximum luminous intensity of the prepared OLED is 10?060?cd?m?2, and the maximum current efficiency is 6.43?cd?A?1, which proves the great potential of the film in flexible electronics.

» Author: Peng-Shuai Bin, Wen-Hao Geng, Tao Wang, Qiangxia Zhu, Min Li, Xiang-Le Liu, Peng-Fei Qian, Ze-Long Bao, Zhi-Xian Yang, Hong-Zhang Geng

» Publication Date: 15/12/2022

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