The performance and industrial viability of organic photovoltaics are strongly influenced by the functionality and stability of interface layers. Many of the interface materials most commonly used in the lab are limited in their operational stability or their materials cost and are frequently not transferred toward large‐scale production and industrial applications. In this work, an advanced aqueous‐solution‐processed cathode interface layer is demonstrated based on cost‐effective organosilica nanodots (OSiNDs) synthesized via a simple one‐step hydrothermal reaction. Compared to the interface layers optimized for inverted organic solar cells (i‐OSCs), the OSiNDs cathode interlayer shows improved charge carrier extraction and excellent operational stability for various model photoactive systems, achieving a remarkably high power conversion efficiency up to 17.15%. More importantly, the OSiNDs’ interlayer is extremely stable under thermal stress or photoillumination (UV and AM 1.5G) and undergoes no photochemical reaction with the photoactive materials used. As a result, the operational stability of inverted OSCs under continuous 1 sun illumination (AM 1.5G, 100 mW cm⁻²) is significantly improved by replacing the commonly used ZnO interlayer with OSiND‐based interfaces.

中文翻译：

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一种基于有机硅纳米点的经济高效，水溶液解决方案的阴极夹层，用于高效且稳定的有机太阳能电池。

有机光伏的性能和工业可行性受到界面层功能和稳定性的强烈影响。实验室中最常用的许多界面材料的操作稳定性或材料成本受到限制，并且通常不会转移到大规模生产和工业应用中。在这项工作中，基于通过简单的一步式水热反应合成的具有成本效益的有机硅纳米点（OSiND），展示了一种先进的水溶液处理阴极界面层。与针对倒置有机太阳能电池（i-OSC）优化的界面层相比，OSiNDs阴极夹层对各种型号的光敏系统显示出改善的电荷载流子提取和出色的操作稳定性，实现了高达17.15％的显着高功率转换效率。更重要的是，OSiNDs的中间层在热应力或光照射（UV和AM 1.5G）下非常稳定，并且与使用的光敏材料不发生光化学反应。结果，在连续的1个阳光照射下（AM 1.5G，100 mW cm），倒置OSC的操作稳定性通过用基于OSiND的界面替换常用的ZnO中间层，显着改善了^-2）。