Effective Defect Passivation via Molecular Interactions Based on Amine-Functionalized Ionic Liquid for Perovskite Solar Cells,ACS Applied Energy Materials

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Effective Defect Passivation via Molecular Interactions Based on Amine-Functionalized Ionic Liquid for Perovskite Solar Cells
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2023-08-17 , DOI: 10.1021/acsaem.3c01343
Zhaoyang Chen _{1,

2} , Liang Wang ₃ , Junhui Fang ₂ , Aamir Saeed ₂ , Kangjun Wang ₁ , Qingqing Miao _{2,

4,

5}

Affiliation

Defect passivation containing ionic liquids (ILs) on perovskite films has been proven to be an extremely effective strategy for highly efficient perovskite solar cells (PSCs). However, the exact interaction mode between the ILs and perovskite crystals and the microcosmic mechanism of the structures of ILs on the devices are not clear. Here, we incorporated an amine-functionalized IL for effective defect passivation on the perovskite films. The amine-functionalized IL interacts with Pb²⁺ and X ^– in perovskite crystals, which can effectively passivate defects and regulate the perovskite crystal growth, forming high-quality perovskite films. The microcosmic mechanism investigation reveals that the effective defect passivation and defect migration suppression due to the amine-functionalized IL facilitate the improvement of the photovoltaic performance of the PSC devices.

中文翻译：

基于胺功能化离子液体的钙钛矿太阳能电池通过分子相互作用有效钝化缺陷

钙钛矿薄膜上含有离子液体（IL）的缺陷钝化已被证明是高效钙钛矿太阳能电池（PSC）的极其有效的策略。然而，ILs与钙钛矿晶体之间的确切相互作用模式以及ILs结构在器件上的微观机制尚不清楚。在这里，我们加入了胺功能化的离子液体，以有效钝化钙钛矿薄膜上的缺陷。胺功能化 IL 与 Pb ²⁺和 X ^{–相互作用}在钙钛矿晶体中，可以有效钝化缺陷并调节钙钛矿晶体的生长，形成高质量的钙钛矿薄膜。微观机制研究表明，胺功能化IL所产生的有效缺陷钝化和缺陷迁移抑制有助于提高PSC器件的光伏性能。

更新日期：2023-08-17

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