Kan Yuanyuan, Sun Yanna, Ren Yi, Xu Yixuan, Jiang Xinyue, Shen Haojiang, Geng Longlong, Li Jianfeng, Cai Ping, Xu Huajun, Gao Ke, Li Yuliang
Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University, Qingdao, 266237, P. R. China.
School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, P. R. China.
Adv Mater. 2024 Apr;36(16):e2312635. doi: 10.1002/adma.202312635. Epub 2024 Jan 17.
Efficient cathode interfacial materials (CIMs) are essential components for effectively enhancing the performance of organic solar cells (OSCs). Although high-performance CIMs are desired to meet the requirements of various OSCs, potential candidates for CIMs are scarce. Herein, an amino-functionalized graphdiyne derivative (GDY-N) is developed, which represents the first example of GDY that exhibits favorable solubility in alcohol. Utilizing GDY-N as the CIM, an outstanding champion PCE of 19.30% for devices based on the D18-Cl:L8-BO (certified result: 19.05%) is achieved, which is among the highest efficiencies reported to date in OSCs. Remarkably, the devices based on GDY-N exhibit a thickness-insensitive characteristic, maintaining 95% of their initial efficiency even with a film thickness of 25 nm. Moreover, the GDY-N displays wide universality and facilitates exceptional stability in OSCs. This work not only enriches the diversity of GDY derivatives, but also demonstrates the feasibility of GDY derivatives as CIMs with high thickness tolerance in OSCs.
高效的阴极界面材料（CIMs）是有效提升有机太阳能电池（OSCs）性能的关键组件。尽管需要高性能的CIMs来满足各类OSCs的要求，但CIMs的潜在候选材料却很稀缺。在此，开发了一种氨基功能化的石墨炔衍生物（GDY-N），这是石墨炔在醇类中具有良好溶解性的首个实例。以GDY-N作为CIM，基于D18-Cl:L8-BO的器件实现了19.30%的出色冠军功率转换效率（PCE）（认证结果：19.05%），这是迄今为止OSCs中报道的最高效率之一。值得注意的是，基于GDY-N的器件表现出厚度不敏感特性，即使膜厚为25 nm时仍能保持其初始效率的95%。此外，GDY-N在OSCs中具有广泛的通用性并展现出卓越的稳定性。这项工作不仅丰富了石墨炔衍生物的多样性，还证明了石墨炔衍生物作为OSCs中具有高厚度耐受性的CIMs的可行性。
