Modulating Crystallization and Defect Passivation by Butyrolactone Molecule for Perovskite Solar Cells.

ABSTRACT: The attainment of a well-crystallized photo-absorbing layer with minimal defects is crucial for achieving high photovoltaic performance in polycrystalline solar cells. However, in the case of perovskite solar cells (PSCs), precise control over crystallization and elemental distribution through solution processing remains a challenge. In this study, we propose the use of a multifunctional molecule, α-amino-γ-butyrolactone (ABL), as a modulator to simultaneously enhance crystallization and passivate defects, thereby improving film quality and deactivating nonradiative recombination centers in the perovskite absorber. The Lewis base groups present in ABL facilitate nucleation, leading to enhanced crystallinity, while also retarding crystallization. Additionally, ABL effectively passivates Pb<

SUBMITTER: Wang F 

PROVIDER: S-EPMC10383146 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature