Abstract
Defect passivation constitutes one of the most commonly used strategies to fabricate highly efficient perovskite solar cells (PSCs). However, the durability of the passivation effects under harsh operational conditions has not been extensively studied regardless of the weak and vulnerable secondary bonding between the molecular passivation agents and perovskite crystals. Here, we incorporated strategically designed passivating agents to investigate the effect of their interaction energies on the perovskite crystals and correlated these with the performance and longevity of the passivation effects. We unraveled that the passivation agents with a stronger interaction energy are advantageous not only for effective defect passivation but also to suppress defect migration. The prototypical PSCs treated with the optimal passivation agent exhibited superior performance and operational stability, retaining 81.9 and 85.3% of their initial performance under continuous illumination or nitrogen at 85 °C after 1008 h, respectively, while the reference device completely degraded during that time. This work provides important insights into designing operationally durable defect passivation agents for perovskite optoelectronic devices.
References
Oct 9, 2012·Science·Michael M LeeHenry J Snaith
Oct 19, 2013·Science·Samuel D StranksHenry J Snaith
Oct 19, 2013·Science·Guichuan XingTze Chien Sum
Nov 2, 2014·Small·Hyun Suk Jung, Nam-Gyu Park
Jan 31, 2015·Science·Dong ShiOsman M Bakr
Feb 1, 2015·Science·Qingfeng DongJinsong Huang
Jun 25, 2015·Nature Communications·Christopher EamesM Saiful Islam
Oct 31, 2015·Science·Wei ChenLiyuan Han
Apr 14, 2017·Nature·Yang Yang, Jingbi You
Jul 1, 2017·Science·Woon Seok YangSang Il Seok
Feb 24, 2018·Physical Chemistry Chemical Physics : PCCP·Na Liu, ChiYung Yam
Mar 13, 2018·Advanced Materials·Tianqi NiuShengzhong Frank Liu
Mar 16, 2018·Nature Communications·Bo LiLongwei Yin
Aug 3, 2018·Nature Communications·Jin-Wook LeeYang Yang
Aug 15, 2018·Nature Communications·Dong YangShengzhong Frank Liu
Dec 1, 2018·Angewandte Chemie·Qidong TaiFeng Yan
Feb 2, 2019·Nature Communications·Tae-Hee HanYang Yang
Mar 20, 2019·Journal of the American Chemical Society·Shuang YangJinsong Huang
Dec 21, 2019·Science·Rui WangYang Yang
Feb 6, 2020·Advanced Materials·Shaun TanYang Yang
Mar 10, 2020·Advanced Materials·Yepin ZhaoYang Yang
Citations
May 22, 2021·ACS Applied Materials & Interfaces·Renjie ChenXiaohong Chen
May 29, 2021·ACS Applied Materials & Interfaces·Kun CaoShufen Chen
Aug 4, 2021·Journal of the American Chemical Society·Robert J E WestbrookSaif A Haque
Aug 3, 2021·ACS Applied Materials & Interfaces·Xiang LiYiwang Chen
Nov 11, 2021·Science Advances·Tianyi HuangYang Yang
Nov 23, 2021·ACS Applied Materials & Interfaces·Yidong MingCongcong Wu