The random orientation of spontaneously formed 2D phase atop 3D perovskites limits the performance of solar cells. Here, authors introduce a meta-amidinopyridine ligand with solvent post dripping to generate highly ordered 2D perovskites, achieving maximum efficiency of 26.05% for stable devices.
- Xiaoming Chang
- Randi Azmi
- Thomas D. Anthopoulos
