通过聚苯胺介导的碘循环和缺陷钝化提高无空穴传输层可印刷介观钙钛矿太阳能电池的性能

Enhancing the Performance of Hole-Conductor-Free Printable Mesoscopic Perovskite Solar Cells through Polyaniline-Mediated Iodine Recycling and Defect Passivation.

作者信息

Xie Jiayu, Liu Jiale, Ma Yongming, Xiang Junwei, Wang Xiaoru, Gao Qiaojiao, Chen Long, Lin Ziheng, Shi Yuan, Zhou Yang, Ming Yue, Mei Anyi, Han Hongwei

机构信息

Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China.

College of Integrated Circuits, Shenzhen Polytechnic University, Shenzhen, Guangdong, 518055, P. R. China.

出版信息

Small. 2025 Feb;21(7):e2411247. doi: 10.1002/smll.202411247. Epub 2025 Jan 5.

DOI:10.1002/smll.202411247

PMID:39757566

Abstract

Printable mesoscopic perovskite solar cells (p-MPSCs) provide an opportunity for low-cost manufacturing of photovoltaics. However, the performance of p-MPSCs is severely compromised by iodine defects. This study presents a strategy by incorporating polyaniline (PANI) to achieve both iodine recycling and iodine defect passivation to significantly improve the performance of p-MPSCs. PANI captures and immobilizes iodine ions, establishing a stable iodine recycling system that effectively suppresses iodine loss. Additionally, the Lewis base properties of PANI enable it to passivate iodine defects within the perovskite and suppress nonradiative recombination. With the synergistic effects, PANI increases the power conversion efficiency of the champion device from 18.28% to 20.24%. This strategy offers a potential solution for enhancing the performance of p-MPSCs with promising implications for practical applications.

摘要

可打印介观钙钛矿太阳能电池（p-MPSCs）为低成本制造光伏器件提供了契机。然而，碘缺陷严重影响了p-MPSCs的性能。本研究提出了一种通过引入聚苯胺（PANI）来实现碘循环利用和碘缺陷钝化的策略，从而显著提高p-MPSCs的性能。聚苯胺捕获并固定碘离子，建立了一个稳定的碘循环系统，有效抑制了碘的损失。此外，聚苯胺的路易斯碱性质使其能够钝化钙钛矿中的碘缺陷并抑制非辐射复合。通过协同作用，聚苯胺将冠军器件的功率转换效率从18.28%提高到了20.24%。该策略为提高p-MPSCs的性能提供了一个潜在的解决方案，对实际应用具有重要意义。