Chirality‐Dependent Second‐Order Nonlinear Optical Effect in 1D Organic–Inorganic Hybrid Perovskite Bulk Single Crystal

Abstract

The introduction of chirality into organic–inorganic hybrid perovskites (OIHPs) is expected to achieve excellent photoelectric and nonlinear materials related to circular dichroism. Owing to the existence of asymmetric center and intrinsic chirality in the chiral OIHPs, the different efficiencies of second harmonic generation (SHG) signal occurs when the circularly polarized light (CPL) with different phases passes through the chiral crystal, which is defined as second harmonic generation circular dichroism (SHG‐CD). Here, the SHG‐CD effect is developed in bulk single crystals of chiral one‐dimensional (1D) [(R/S)‐3‐aminopiperidine]PbI4. It is the first time that CPL is distinguished using chirality‐dependent SHG‐CD effect in OIHPs bulk single crystals. Such SHG‐CD technology extends the detection range to near infrared region (NIR). In this way, the anisotropy factor (gSHG‐CD) through SHG‐CD signal is as high as 0.21.

Chiral Viologen-Derived Water-Stable Small Band Gap Lead Halides: Synthesis, Characterization, and Optical Properties

“…3 Optical properties of OIMHs were not explored until Moon and coworkers published the first chiroptical study in 2017 of R/Smethylbenzylammonium lead iodides. 4 Due to the symmetry breaking in chiral OIMHs, properties like ferroelectricity, 5,6 second harmonic generation, 7 Rashba splitting, 8 and circular photogalvanic effect 9 were studied. Chiral-induced spin selectivity was reported in both 2D and 1D chiral OIMHs by Vardeny and co-workers 10 and Song and co-workers, 11 respectively.…”