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Abstract
Surface passivation is crucial for high-performance perovskite solar cells (PSCs). This study introduces a binary and synergistic post-treatment (BSPT) method using 4-tert-butyl-benzylammonium iodide and phenylpropylammonium iodide to enhance the passivation layer. The BSPT layer shows improved crystallinity, molecular packing, and energy band alignment, facilitating hole extraction and transfer. This led to a record-certified quasi-steady power conversion efficiency of 26.0% in PSCs, maintaining 81% of initial efficiency after 450 hours.
Publisher
Nature Communications
Published On
Oct 04, 2024
Authors
Zihan Qu, Yang Zhao, Fei Ma, Le Mei, Xian-Kai Chen, Haitao Zhou, Xinbo Chu, Yingguo Yang, Qi Jiang, Xingwang Zhang, Jingbi You
Tags
perovskite solar cells
surface passivation
power conversion efficiency
post-treatment method
hole extraction
crystallinity
molecular packing

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