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Enhanced charge carrier transport and defects mitigation of passivation layer for efficient perovskite solar cells

Engineering and Technology

Enhanced charge carrier transport and defects mitigation of passivation layer for efficient perovskite solar cells

Z. Qu, Y. Zhao, et al.

Discover how a groundbreaking binary and synergistic post-treatment method enhanced the passivation layers in perovskite solar cells, achieving a stunning power conversion efficiency of 26.0%. This research, conducted by Zihan Qu and colleagues, offers exciting advancements in solar cell technology.

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Playback language: English
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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