Designable Layer Edge States in Quasi-2D Perovskites Induced by Femtosecond Pulse Laser.

ABSTRACT: The low-energy layer edge states (LESs) from quasi 2D hybrid perovskite single crystals have shown great potential because of their nontrivial photoelectrical properties. However, the underlying formation mechanism of the LESs still remains controversial. Also, the presence or creation of the LESs is of high randomness due to the lack of proper techniques to manually generate these LESs. Herein, using a single crystals platform of quasi-2D (BA)₂ (MA)_n-1 Pb_n I_3n+1 (n > 1) perovskites, the femtosecond laser ablation approach to design and write the LESs with a high spatial resolution is reported. Fundamentally, these LESs are of smaller bandgap 3D MAPbI₃ nanocrystals which are formed by the laser-induced BA escaping from the lattice and

SUBMITTER: Miao Y 

PROVIDER: S-EPMC9284193 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature