Large-Area Gravure-Printed AgNWs Electrode on Water/Oxygen Barrier Substrate for Long-Term Stable Large-Area Flexible Organic Solar Cells†,Chinese Journal of Chemistry

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Large-Area Gravure-Printed AgNWs Electrode on Water/Oxygen Barrier Substrate for Long-Term Stable Large-Area Flexible Organic Solar Cells†
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2023-11-20 , DOI: 10.1002/cjoc.202300479
Hao Wang _{1,

2} , Yaqin Pan ₁ , Yunfei Han ₁ , Zhuo Chen ₁ , Tianyu Liu _{1,

2} , Lianping Zhang ₁ , Qun Luo ₁ , Chang‐Qi Ma ₁

Affiliation

Large-area AgNWs electrodes (25 cm × 10 cm) were fabricated through roll-to-roll printing on the polyvinyl alcohol (PVA) modified water and oxygen barrier substrate. The modification of the barrier film with PVA improved the wettability of silver nanowires on the barrier films and led to the formation of homogenous large-area AgNWs networks. The mechanical flexibility, especially the adhesion force between the silver electrode and the barrier film substrate was dramatically improved through PVA modification. The efficiency of 13.51% for the flexible OSCs with an area of 0.64 cm² was achieved based on the PET/barrier film/PVA/AgNWs electrode. The long-term stability showed the flexible OSCs based on the PET/barrier film/PVA/AgNWs electrode have a significantly improved stability relative to the device on PET/AgNWs electrode, and comparable air stability as the rigid device with glass/ITO device. The unencapsulated devices maintained nearly 50% of the original efficiency after storage for 600 h in air. After a simple top encapsulation, the flexible devices remained at 60% of the initial efficiency after 2000 h in the air. Therefore, the flexible AgNWs electrode based on the barrier film would have the potential to improve the air storage stability of organic flexible solar cells.

中文翻译：

水/氧屏障基板上的大面积凹版印刷银纳米线电极，用于长期稳定的大面积柔性有机太阳能电池†

通过卷对卷印刷在聚乙烯醇（PVA）改性的水和氧阻隔基底上制备大面积AgNWs电极（25 cm×10 cm）。用PVA对阻挡膜进行改性改善了阻挡膜上银纳米线的润湿性，并导致形成均匀的大面积AgNWs网络。通过PVA改性，机械柔韧性，尤其是银电极与阻隔膜基材之间的附着力得到显着提高。基于PET/阻挡膜/PVA/AgNWs电极，面积为0.64 cm ²的柔性OSC的效率达到13.51% 。长期稳定性表明，基于PET/阻挡膜/PVA/AgNWs电极的柔性OSC相对于PET/AgNWs电极上的器件具有显着提高的稳定性，并且与具有玻璃/ITO器件的刚性器件相当的空气稳定性。未封装的器件在空气中储存 600 小时后仍保持原始效率的近 50%。经过简单的顶部封装后，柔性器件在空气中放置 2000 小时后仍保持初始效率的 60%。因此，基于阻挡膜的柔性AgNWs电极将有可能提高有机柔性太阳能电池的空气储存稳定性。

更新日期：2023-11-20

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