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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Methylamine-induced defect-healing and cationic substitution: a new method for low-defect perovskite thin films and solar cells
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Methylamine-induced defect-healing and cationic substitution: a new method for low-defect perovskite thin films and solar cells

机译：甲胺诱导的缺陷愈合和阳离子替代：一种低缺陷钙钛矿薄膜和太阳能电池的新方法

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摘要

The power conversion efficiency of perovskite solar cells has been recently increased from 3.81% to 24.2%, yet it still lags behind the Shockley-Queisser limit with an ideal value of 33%. It has been widely recognized that the effective defect passivation of perovskite films is crucial for further boost in the efficiency. Herein, we systematically summarized and reviewed the development, recent advances, and commercial applications of the methylamine (CH3NH2, MA)-induced defect-healing (MIDH) method, from the view of defect passivation and moisture stability. MA gas can recrystallize perovskites and form dense films with higher crystallinity and fewer defects, which can improve the carrier lifetime, carrier diffusion length, and moisture stability. Moreover, this MIDH technique has been successfully implemented in scalable perovskite module deposition process and recycling process, thus enabling the large scale fabrication of high quality perovskite films with lower trap state density. Lastly, the perspective of this promising technique and some remaining open questions about the future scale up of the manufacturing process for obtaining high quality perovskite thin films and related optoelectronics devices are proposed.
机译：钙钛矿太阳能电池的功率转换效率最近从3.81％增加到24.2％，但它仍然落后于震惊 - 批准限额，理想值为33％。人们普遍认识到，钙钛矿薄膜的有效缺陷钝化对于进一步提升效率至关重要。在此，我们系统地概述和审查了甲胺（CH3NH2，MA） - 诱导缺陷愈合（Midh）方法的开发，最近的进展和商业应用，从缺陷钝化和湿度稳定性。马气可以重结晶钙钛矿并形成具有更高结晶度和更少缺陷的致密薄膜，其可以改善载体寿命，载流子扩散长度和水分稳定性。此外，该MIDH技术已经成功地在可扩展的钙钛矿模块沉积过程和再循环过程中实现，因此能够具有较低捕集状态密度的高质量钙钛矿膜的大规模制造。最后，提出了关于获得高质量钙钛矿薄膜和相关光电子设备的未来扩大的未来扩大的一些公开问题的视野。

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