Jiong Dong , Zhuonan Shi , Shina Li , Kang Li , Zichen Yin , Yisa Liu , Lili Xu , Ruixin Ma
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引用次数: 0
摘要
过氧化物吸收层中缺陷的存在会大大降低过氧化物太阳能电池(PSCs)的光电性能。本研究在包晶表面引入了路易斯碱三乙醇胺(TEA),其羟基与铅离子或 I 离子形成的氢键固定了包晶的卤素阴离子,抑制了离子在包晶中的迁移。三乙醇胺在晶界处有明显的作用,能显著改善透辉石薄膜的表面质量,提高器件的效率。与原始器件(19.26%)相比,以最佳浓度钝化后的器件表现出更好的光伏性能和稳定性,获得了 20.39% 的冠军效率,并且在不封装的情况下老化 1080 小时后,效率仍保持在初始效率的 88.3%。我们预计,在过氧化物表面添加三乙醇胺将为提高 PSC 的性能、空气稳定性和热稳定性提供一种有用的策略。
Enhancing efficiency and stability of perovskite solar cells by introduction of triethanolamine
The presence of defects in the perovskite absorption layer significantly reduces the photovoltaic performance of perovskite solar cells (PSCs). In this study, a Lewis base Triethanolamine (TEA) is introduced on the perovskite surface, and the hydrogen bond formed by its hydroxyl group with Pb ions or I ions fix the halogen anion of perovskite and suppresses the migration of ions in perovskite. TEA has an obvious effect at the grain boundary, significantly improving the surface quality of the perovskite film and the device's efficiency. Compared with the pristine device (19.26%), the device after passivation at the optimal concentration exhibits better photovoltaic performance and stability, which obtained the champion efficiency of 20.39% and remained at 88.3% of the initial efficiency after being aged 1080 h without encapsulation. We expect that adding TEA to the perovskite surface will provide a useful strategy to enhance the performance of PSCs, as well as air and thermal stability.
期刊介绍:
Organic Electronics is a journal whose primary interdisciplinary focus is on materials and phenomena related to organic devices such as light emitting diodes, thin film transistors, photovoltaic cells, sensors, memories, etc.
Papers suitable for publication in this journal cover such topics as photoconductive and electronic properties of organic materials, thin film structures and characterization in the context of organic devices, charge and exciton transport, organic electronic and optoelectronic devices.