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Coordination modulated crystallization and defect passivation in high quality perovskite film for efficient solar cells
Coordination Chemistry Reviews ( IF 20.6 ) Pub Date : 2020-06-09 , DOI: 10.1016/j.ccr.2020.213408
Xiaoyu Deng , Zhiyuan Cao , Yuan Yuan , Mason Oliver Lam Chee , Lisha Xie , Aili Wang , Yong Xiang , Tingshuai Li , Pei Dong , Liming Ding , Feng Hao

Hybrid perovskite solar cells (PSCs) have come into prominence as a potential alternative to crystalline silicon solar cells due to their outstanding photovoltaic performance and the simple manufacturing process. Over the past few years, the performance has greatly benefited from the emergence of advanced fabrication technologies capable of producing high quality perovskite films. The transforming process from precursor to perovskite film directly influences the film quality by controlling the nucleation and crystal growth. In particular, the coordination of electron-rich atoms in solvent or additives with Pb ions in perovskite precursor has been widely used to modulate the crystal growth to obtain compact and dense perovskite film with fewer defects. Here, a systematic review is presented to describe the effect of coordination interaction on perovskite crystallization process, defects passivation, hysteresis behavior and long-term stability for efficient perovskite thin film and related photovoltaics. Functional additives with carbonyl-, acyl- and cyano- group bearing lone electron pairs have been widely adopted to coordinate with PbI2 to retard crystallization and obtain a high-quality perovskite film. Meanwhile, these additives can modify the surface or grain boundary of as-formed perovskite film to passivate defects, mitigate hysteresis and prevent the moisture permeation to prolong the device lifetime. The coordination interaction provides a feasible strategy to improve the perovskite film quality, which is crucial to increase the efficiency and longevity of PSCs and other related optoelectronic devices towards future upscaling and commercialization.



中文翻译:

高质量钙钛矿薄膜中的配位调制结晶和缺陷钝化,用于高效太阳能电池

混合钙钛矿太阳能电池(PSC)由于其出色的光伏性能和简单的制造工艺而成为晶体硅太阳能电池的潜在替代品。在过去的几年中,这种性能大大受益于能够生产高质量钙钛矿薄膜的先进制造技术。从前体到钙钛矿薄膜的转化过程通过控制成核和晶体生长直接影响薄膜质量。特别地,钙钛矿前体中的溶剂或添加剂中的富电子原子与Pb离子的配位已被广泛用于调节晶体生长,从而获得缺陷少的致密且致密的钙钛矿膜。这里,进行了系统的综述,以描述配位相互作用对钙钛矿薄膜和相关光伏电池钙钛矿结晶过程,缺陷钝化,磁滞行为和长期稳定性的影响。具有羰基,酰基和氰基的孤电子对的功能性添加剂已被广泛采用来与PbI配合2延缓结晶并获得高质量的钙钛矿膜。同时,这些添加剂可以改变形成的钙钛矿薄膜的表面或晶界,以钝化缺陷,减轻磁滞现象并防止水分渗透,从而延长器件寿命。协调相互作用为提高钙钛矿薄膜的质量提供了可行的策略,这对于提高PSC和其他相关光电器件的效率和使用寿命至未来的规模化和商业化至关重要。

更新日期:2020-06-09
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