Small, Год журнала: 2025, Номер unknown
Опубликована: Март 13, 2025
Abstract Perovskite solar cells (PSCs) are emerging photovoltaic devices renowned for their high efficiency and low cost. Efficient stable PSCs depend on high‐quality perovskite films, which strongly influenced by the excellent nucleation growth. The choice of solvent is critical crystallization behavior films. To improve film quality address uncontrollable fast crystallization, it essential to replace traditional dimethyl sulfoxide (DMSO) solvent. In this work, tetramethylurea (TMU) ligand successfully introduced into DMSO first time. Through intermediate phase engineering, films optimized. stronger interaction between TMU solutes versus can effectively delay transition from phase, yielding with larger grains lower defects. Finally, optimized maintained stability after aging 150 h under 95% relative humidity (RH) or at 85 °C, while device increased 19.54% 21.05%. Furthermore, exhibited outstanding ≈1000 50% RH. This research provides new insights good example achieving highly efficient through engineering.
Язык: Английский