peri-Fused polyaromatic molecular contacts for perovskite solar cells

• 成果类型: Article
• 署名作者: Zhao, Ke; Liu, Qingqing; Yao, Libing; Deger, Caner; Shen, Jiahui; Zhang, Xu; Shi, Pengju; Tian, Yuan; Luo, Yixin; Xu, Jiazhe; Zhou, Jingjing; Jin, Donger; Wang, Sisi; Fan, Wei; Zhang, Shaochen; Chu, Shenglong; Wang, Xiaonan; Tian, Liuwen; Liu, Ruzhang; Zhang, Li; Yavuz, Ilhan; Wang, Hong-fei; Yang, Deren; Wang, Rui; Xue, Jingjing
• 署名单位: Zhejiang University; Zhejiang University; Westlake University; Westlake University; Marmara University; Yangzhou University; Westlake University; Baima Lake Laboratory; Westlake University; Westlake University; Westlake University
• 刊物名称: Nature
• ISSN/ISSBN: 0028-6593
• DOI: 10.1038/s41586-024-07712-6
• 发表日期: 2024-08-08
• 关键词: inborn-errors; simplex; receptor; protein; entry; rna; deficiency; mutations; deletion; immunity

摘要

Molecule-based selective contacts have become a crucial component to ensure high-efficiency inverted perovskite solar cells1-5. These molecules always consist of a conjugated core with heteroatom substitution to render the desirable carrier-transport capability6-9. So far, the design of successful conjugation cores has been limited to two N-substituted pi-conjugated structures, carbazole and triphenylamine, with molecular optimization evolving around their derivatives2,5,10-12. However, further improvement of the device longevity has been hampered by the concomitant limitations of the molecular stability induced by such heteroatom-substituted structures13,14. A more robust molecular contact without sacrificing the electronic properties is in urgent demand, but remains a challenge. Here we report a peri-fused polyaromatic core structure without heteroatom substitution that yields superior carrier transport and selectivity over conventional heteroatom-substituted core structures. This core structure produced a relatively chemically inert and structurally rigid molecular contact, which considerably improved the performance of perovskite solar cells in terms of both efficiency and durability. The champion device showed an efficiency up to 26.1% with greatly improved longevity under different accelerated-ageing tests.