Ammonia Borane All-In-One Modification Strategy Enables High-Performance Perovskite Solar Cells.

ABSTRACT: Perovskite solar cells have achieved remarkable progress in photovoltaic efficiency. However, interfacial defects at the buried and upper interfaces of perovskite layer remain a critical challenge, leading to charge recombination, ion migration, and iodine oxidation. To address this, we propose a novel all-in-one modification strategy employing ammonia borane (BNH₆) as a multifunctional complex. By incorporating BNH₆ at both buried and upper interfaces simultaneously, we achieve dual-interfacial defect passivation and iodide oxidation suppression through three key mechanisms: (1) hydrolysis-induced interaction with SnO₂, (2) coordination with Pb²⁺, and (3) inhibition of I^- oxidation. This approach significantly enhances device performa

SUBMITTER: Ma J 

PROVIDER: S-EPMC12757506 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature