Multivalent ligands regulate dimensional engineering for inverted perovskite solar modules
King Abdullah University of Science and Technology · Chinese University of Hong Kong, Shenzhen · +8 more institutions
Abstract
Multivalent, resonance-stabilized amidinium ligands enable stronger chemical coordination and reduced deprotonation compared with conventional monovalent ammonium ligands in low-dimensional perovskites. Here, we introduce a controllable one- to two-dimensional (1D-to-2D) structural transition strategy by systematically tuning ligand conformation, thereby modulating hydrogen bonding, π-π stacking, and basicity to elucidate the relationship between molecular structure, interfacial interactions, and resulting dimensionality. The 1D-amidinium perovskite structure, with its pronounced geometric anisotropy, impedes uniform surface coverage and defect passivation. In contrast, the 2D-amidinium perovskite forms a…
Citation impact
- FWCI
- 75.16
- Percentile
- 100%
- References
- 49
Authors
30Topics & keywords
- Perovskite (structure)
- Passivation
- Ligand (biochemistry)
- Deprotonation
- Energy conversion efficiency
- Curse of dimensionality
- Affordable and clean energy