Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning.

ABSTRACT: Two-dimensional organic-inorganic hybrid halide perovskites possess diverse structural polymorphs with versatile physical properties, which can be controlled by order-disorder transition of the spacer cation, making them attractive for constructing semiconductor homojunctions. Here, we demonstrate a space-cation-dopant-induced phase stabilization approach to creating a lateral homojunction composed of ordered and disordered phases within a two-dimensional perovskite. By doping a small quantity of pentylammonium into (butylammonium)₂PbI₄ or vice versa, we effectively suppress the ordering transition of the spacer cation and the associated out-of-plane octahedral tilting in the inorganic framework, resulting in phase pining of the disordered phase when decreasing temper

SUBMITTER: Hong H 

PROVIDER: S-EPMC11009245 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature