Core/shell AgNWs@SnOx electrodes for high performance flexible indoor organic solar cells with >25% efficiency. (March 2023)

• Record Type: Journal Article
• Authors: Xie, Chengcheng; Xiao, Chengyi; Fang, Jie; Zhao, Chaowei; Li, Weiwei
• Is Part Of: Nano energy. Volume 107(2023)
• Publication Date: 2023-03
• Subjects: Flexible organic solar cells -- Silver nanowires -- Redox reaction -- Indoor photovoltaics -- Power conversion efficiency; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2022.108153
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: In this work, an inorganic semiconductor SnO x has grown on the surface of silver nanowires (AgNWs) to form core/shell electrodes, which was successfully applied into flexible indoor organic solar cells (OSCs). Based on the redox reaction between Sn 2+ and Ag +, the pristine AgNWs thin films were treated by SnCl2 in an aqueous solution, so that SnO x was generated and meanwhile the defect on the surface of AgNWs (ex. Ag + and polyvinylpyrrolidone) was removed. SnO x can not only improve the stability, but also more importantly, tune the work function of AgNWs due to its n-type semiconducting nature. Therefore, photogenerated charges were efficiently injected and collected at the electrode. With this AgNWs@SnO x electrode, flexible indoor OSCs provided a high efficiency of 25.51% under 1000 lux illumination, while the unmodified AgNWs electrode only showed an efficiency of 18.84%. Graphical Abstract: A redox reaction was used to treat silver nanowires to generate core/shell structures with inorganic semiconductor SnO x as protecting layer, so that flexible indoor organic solar cells based on this electrode provided a high efficiency of 25.51 % under LED light. ga1 Highlights: A redox reaction between Sn 2+ and Ag + to address the roughness, conductivity and stability issues of AgNWs. Flexible OSCs based on AgNWs@SnO x provided champion efficiency of 25.51% under 1000 lux LED.