Amphoteric coplanar conjugated molecules enabling efficient and stable perovskite/silicon tandem solar cells.

ABSTRACT: The perovskite/silicon tandem solar cells (TSCs) offers a state-of-the-art solution for achieving unparalleled efficiency and cost-effectiveness in solar energy conversion. However, the fabrication of high-quality wide-bandgap perovskite films with a thickness of 1 μm on nano-textured silicon substrates remains a formidable challenge. Herein, we designed an amphoteric coplanar conjugated molecule (ACCM) guided by the principles of density functional theory and Brønsted acid-base chemistry. The inductive effects among the functional groups within the ACCM allow it to exist in various ionic forms. Coupled with its intrinsic π-stacking effect, the ACCM establishes multiple strong interactions with perovskite components, effectively modulating crystallization kinetics and passivating defects.

SUBMITTER: Yang D 

PROVIDER: S-EPMC12368124 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature