Defect Passivation and Stress Release Strategies for Inverted Perovskite Solar Cells Based on the Low-Pressure-Assisted Solution Process.

Perovskite solar cells (PSCs) have attracted much attention in the global photovoltaic field due to their excellent optoelectronic properties. However, the intrinsic crystalline properties and the preparation methods of perovskites result in numerous defects and residual stress in the perovskite film. To address this issue, the additive 3-methylthio-1-propylammonium bromide (3MeSPABr) was added to the perovskite precursor solution, and PSCs with an inverted structure via a low-pressure-assisted solution process were fabricated.