Arjmand Faezeh, Rashidi Ranjbar Zohreh
Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, 76169-133, Iran.
Sci Rep. 2024 Jun 4;14(1):12843. doi: 10.1038/s41598-024-62977-1.
This article investigates the impact of metal-organic frameworks (MOFs) on the performance and stability of perovskite solar cells (PSCs), specifically focusing on the type of metal and the morphology of the MOF. Two types of MOFs, copper-benzene-1,3,5-tricarboxylate (Cu-BTC MOF) with spherical morphology and cobalt-benzene-1,3,5-tricarboxylate (Co-BTC MOF) with rod morphology, are synthesized and spin-coated on TiO substrates to form FTO/TiO/MOF/CHNHPbI/C-paste PSCs. The morphology and size of the MOFs are characterized by scanning electron microscopy (SEM), and the crystallinity and residual PbI of the perovskite films are analyzed by X-ray diffraction (XRD). The results show that the Co-BTC MOF PSC exhibits the highest power conversion efficiency (PCE) of 10.4% and the best stability, retaining 82% of its initial PCE after 264 h of storage in ambient air. The improved performance and stability are attributed to the enhanced crystallinity and reduced residual PbI of the perovskite film after Co-BTC MOF modification. The paper showcases the immense potential of MOF-based interlayers to revolutionize PSC technology, offering a path toward next-generation solar cells with enhanced performance and longevity.
本文研究了金属有机框架材料（MOFs）对钙钛矿太阳能电池（PSCs）性能和稳定性的影响，特别关注金属类型和MOF的形态。合成了两种类型的MOF，即具有球形形态的铜-苯-1,3,5-三羧酸酯（Cu-BTC MOF）和具有棒状形态的钴-苯-1,3,5-三羧酸酯（Co-BTC MOF），并旋涂在TiO2衬底上以形成FTO/TiO2/MOF/CH3NH3PbI3/C-浆料PSC。通过扫描电子显微镜（SEM）对MOF的形态和尺寸进行了表征，通过X射线衍射（XRD）分析了钙钛矿薄膜的结晶度和残余PbI2。结果表明，Co-BTC MOF PSC表现出最高的功率转换效率（PCE），为10.4%，并且具有最佳的稳定性，在环境空气中储存264小时后仍保留其初始PCE的82%。性能和稳定性的提高归因于Co-BTC MOF改性后钙钛矿薄膜结晶度的提高和残余PbI2的减少。本文展示了基于MOF的中间层在革新PSC技术方面的巨大潜力，为下一代高性能和长寿命太阳能电池提供了一条途径。
