Abstract

Perovskite Solar Cells (PSCs) have undergone a rapid development and progress in recent years, achieved high power conversion efficiencies beyond 20%. This was made possible through the developments in different areas of the device and its process engineering, including the development of PSCs interface interfacial engineering techniques. In addition to the modification of the perovskite absorber layer by means of additives, solution engineering and various post-treatments of the perovskite layer such as Solvent Vapor Annealing (SVA) have also been developed and applied for developing high performance PSCs. This short review reviews the recent advancements in SVA post-treatments of perovskite films to modify and tune their grain morphology, crystallinity and trap density, and thereby improving the PSCs performance and stability.

Keywords:Perovskite solar cells; Crystallinity; Photoluminescence; Solvents; Photocurrent

Abbreviations: PSCs: Perovskite Solar Cells; SVA: Solvent Vapor Annealing; DMF: Dimethylformamide; GBL: Gamma-Butyrolactone; DMSO: Dimethyl-Sulfoxide; NMP: N-Methyl-2-pyrrolidone