Chiral Ligand-Induced Structural Transformation of Low-Dimensional Hybrid Perovskite for Circularly Polarized Photodetection

作者：Maoxin Li, Feier Fang, Xiao Huang, Guangyou Liu, Zheng Lai, Zhihao Chen, Jiahao Hong, Yu Chen, Rong‐Jia Wei, Guo‐Hong Ning, Kai Leng, Yumeng Shi, Bingbing Tian · 发表于：Chemistry of Materials · 年份：2022 · DOI：10.1021/acs.chemmater.1c03622 · 被引用次数：62 · 研究领域：Perovskite Materials and Applications、2D Materials and Applications、Solid-state spectroscopy and crystallography

Chiral organic–inorganic hybrid perovskites (OIHPs) are inversion-asymmetric and have many remarkable properties, including circular dichroism, optical rotation, nonlinear optics, and second-harmonic generation (SHG). Although chiral molecules are responsible for chiroptical properties, they are generally not expected to influence the crystallization of OIHPs. Here, we find that OIHPs synthesized with pristine S- and R-molecules crystallize as 1D perovskites, whereas those synthesized with the racemic molecule crystallized as 2D perovskites. Single crystal X-ray diffraction reveals that the structure change is related to the differing packing of chiral molecules versus racemic ones in OIHPs. Furthermore, we demonstrate that chiral OIHPs containing the S- or R-ligands could be applied in circularly polarized light detectors.