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FAPbI3-nanoparticles with ligands act synergistically in absorbent layers for high-performance and stable FAPbI3 based perovskite solar cells
Nano Energy ( IF 16.8 ) Pub Date : 2024-11-14 , DOI: 10.1016/j.nanoen.2024.110476
Weina Zhang, Takeru Bessho, Ludmila Cojocaru, Jotaro Nakazaki, Haibin Wang, Xiao Liu, Miwako Furue, Satoshi Uchida, Hiroshi Segawa

The performance of perovskite solar cells (PSCs) depends on the quality of the perovskite absorber layer. In this study, oleic acid (OA) and oleylamine (OAm) ligand-capped formamidinium lead iodide (FAPbI3) nanoparticles (NPs) were incorporated into the formamidinium iodide (FAI) solution, which is one of the precursors for the sequential deposition of the FAPbI3 layer. The synergistic effect of the FAPbI3-NPs and the capped ligand substantially improves the crystallinity, uniformity, and morphology of the bulk FAPbI3 perovskite films. The enhancements lead to a reduction in charge recombination and a boost in charge transfer efficiency, enabling the optimized PSCs to achieve a remarkable peak power conversion efficiency (PCE) of 25.68 %. Moreover, these PSCs show good stability, with unencapsulated devices maintaining 93 % of the peak performance under ambient air (RH 50 %) for 1000 hours.

中文翻译:


具有配体的 FAPbI3 纳米颗粒在吸收层中协同作用,用于高性能和稳定的基于 FAPbI3 的钙钛矿太阳能电池



钙钛矿太阳能电池 (PSC) 的性能取决于钙钛矿吸收层的质量。在本研究中,油酸 (OA) 和油胺 (OAm) 配体封端的碘化甲脒铅 (FAPbI3) 纳米颗粒 (NPs) 掺入碘化甲脒 (FAI) 溶液中,这是 FAPbI3 层顺序沉积的前体之一。FAPbI 3-NPs 和加帽配体的协同作用显着改善了块体 FAPbI3 钙钛矿薄膜的结晶度、均匀性和形态。这些增强功能减少了电荷复合,提高了电荷转移效率,使优化的 PSC 能够实现 25.68% 的显着峰值功率转换效率 (PCE)。此外,这些 PSC 表现出良好的稳定性,未封装的器件在环境空气 (RH 50%) 下保持 93% 的峰值性能 1000 小时。
更新日期:2024-11-14
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