Affiliation:
1. State Key Laboratory of Coordination Chemistry MOE Key Laboratory of High Performance Polymer Materials & Technology School of Chemistry and Chemical Engineering Nanjing University Nanjing Jiangsu 21003 P. R. China
Abstract
AbstractOrganic semiconductors (e.g., PCBM and IDIC) frequently serve as interface passivants for perovskite solar cells (PSCs) due to their beneficial passivation effects on perovskite interfaces. However, their passivation to the interiors of perovskite films is greatly limited by their poor solubility in polar solvents and compatibility issues. Here the facile synthesis of organic semiconductor nanoparticle (NP) passivants that readily disperse in perovskite inks is reported. Adding these NPs into perovskite inks not only modulates perovskite crystallization, improves film quality and conductivity, but also achieves holistic bulk film passivation. Consequently, blade‐coated p‐i‐n PSCs with ICBA NPs achieve an impressive efficiency of 25.1% (independently certified as 25.0%), the highest reported value for air‐processed PSCs irrespective of fabrication methods or device structures. This work develops a novel approach for effective and holistic perovskite passivation by converting conventional passivants to perovskite‐compatible NPs, paving the way for more efficient and stable perovskite solar devices.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Cited by
1 articles.
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