Cage Balancing Enhances Optoelectronic and Lasing Performance in Stable Quasi-2D Tin Iodide Perovskites.

ABSTRACT: Two-dimensional (2D) tin halide perovskites are highly tunable and low-toxicity semiconductors, promising for next-generation optoelectronics. However, achieving air stability and excellent photophysical properties simultaneously necessitates deliberate structure tuning using organic spacer cations and A-site cations. Here, we report a series of new quasi-2D Ruddlesden-Popper tin halide perovskites using a fluorinated aromatic spacer cation, 4-fluorophenethylammonium (4FPEA), and systematically investigate the impacts of layer thickness, spacer cation, and A-site cation on the crystal structures and optical properties of (4FPEA)₂(A)_n-1Sn_nI_3n+1. These 4FPEA-based 2D tin perovskites, further tuned by the A-cations, exhibit uniq

SUBMITTER: Triggs CT 

PROVIDER: S-EPMC12503365 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature