Engineering the intermediate adduct phase to control the crystallization of perovskites for efficient and stable perovskite solar cells

Abstract

Perovskite solar cells (PSCs), on ac-count of their ever-increasing power conversion efficien-cy (PCE), are capti-vating the industri-alists’ great inten-tions. Despite that, the performance of perovskite solar cells, especially the long...

Challenges in Controlling the Crystallization Pathways and Kinetics for Highly Reproducible Solution-Processing of Metal Halide Perovskites

“…To delve into the details of coordinative interactions between oxygen-bearing solvent molecules, FAI, and Pb 2+ , it was elucidated how solvent molecules in the presence of MA + or FA + ions impact intermediate complex stability. , Figure A shows that the FAI has distinctly different interactions with solvents. The strong interaction of NMP with FAI, which is likely to form charge-transfer FAI-NMP complexes within the solution, can be confirmed when observing a change in solution color while DMF and DMSO give no changes.…”

A Functional Biological Molecule Restores the PbI2 Residue-Induced Defects in Two-Step Fabricated Perovskites

“…As on the amines' deposition at PbI 2 , the perovskite conversion stops right after the resultant wall formation in the form of the perovskite layer, further inhibiting the penetration of organic cations. Comparatively, this perovskite barrier formation is more critical in FA-riched organic cations where the PbI 2 with FAI reaction is fast [21][22][23][24]. Consequently, a large amount of PbI 2 residue is generated in the FA-based perovskite layers beneath the perovskite.…”