Mixing halogens improves the passivation effects of amine halide on perovskite
Mixing halogens improves the passivation effects of amine halide on perovskite
复制标题
混合卤素提高卤化胺对钙钛矿的钝化效果
DOI：
10.1016/j.electacta.2021.139782
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发表时间：
2022
影响因子：
6.6
通讯作者：
Zhangjing Zhang
中科院分区：
文献类型：
--
作者：
Shicheng Tang;Jingan Chen;Chi Li;Ziwen Mao;Zhibin Cheng;Jindan Zhang;Mengqi Zhu;Shengchang Xiang;Zhangjing Zhang
利用有机卤代胺作为钙钛矿太阳能电池中间层的缺陷钝化近年来引起了人们的关注。在此，我们重点关注有机卤代胺层中很少被研究的卤素部分，系统地研究了卤素部分对钙钛矿缺陷钝化的影响。在详细比较IpAF、IpACl或IpABr作为钙钛矿缺陷钝化剂的差异和优点的基础上，采用混合卤代异戊胺（IpAX，IpA=异戊胺；X=F，Cl，Br混合物）作为MAPbI3表面的钝化层，以充分利用每种卤素的优点。正如预期的那样，IpAX 作为缺陷钝化剂表现出优于任何单卤代异戊胺的优势，并且基于 IpAX 的器件实现了 20.64% 的最佳性能，并且在 1000 小时内稳定性大大提高。这些结果凸显了有机卤代胺中的卤素部分对于钝化缺陷以提高太阳能电池的效率和耐久性的重要性。
Defects passivation using organic halogenated amines as interlayer in perovskite solar cells attracts attentions in the few years. Herein, we focus on the barely studied halogen part of the organic halogenated amines layer, and systemically investigate the influence of halogen part on the perovskite defect passivation. Based on detailed comparison of the differences and advantages of IpAF, IpACl or IpABr as perovskite defect passivators, mixed-halogenated isopentylamines (IpAX, IpA = isopentylamine; X= F, Cl, Br mixture) are used as passivation layer on MAPbI3surface to make full use of the advantages of each halogen. As expected, IpAX exhibits superiority as defect passivator over the any single-halogenated isopentylamine, and device based on IpAX achieves a best performance of 20.64% with greatly improved stability in 1000 h. These results highlight the importance of halogen part in organic halogenated amines on the passivation of defects for improvement of the efficiency and durability of solar cells.