Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

Abstract Metal halide perovskite solar cells (PSCs) are promising as the next‐generation photovoltaic technology. However, inferior stability under various temperatures remains a significant obstacle to commercialization. Here, heat‐triggered dynamic self‐healing framework (HDSF) is implemented repair defects at grain boundaries caused by thermal variability, enhancing PSCs' temperature stability. HDSF, distributed and surface of film, stabilizes lattice releases crystal stress through exchange reaction sulfide bonds. The resultant PSCs achieved power‐conversion efficiency (PCE) 26.32% (certified 25.84%) with elevated stability, retaining 88.7% initial PCE after 1000 h 85 °C. In variable cycling test (between −40 80 °C), HDSF‐treated device retained 87.6% its °C 92.6% 160 cycles. This strategy could significantly enhance reliability in application scenarios.

Язык: Английский