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Updated: Aug 12, 2025

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
A photoluminescent chiral lead-free hybrid ferroelastic semiconductor with switchable second-harmonic generation
Qin Liu1, Hang Peng1, Jun-Chao Qi1
1Ordered Matter Science Research Center, Nanchang University, Nanchang 330031, People's Republic of China. liaowq@ncu.edu.cn.
Abstract:
Chiral organic-inorganic hybrid semiconductors (COIHSs) dominated by lead halides have recently gained tremendous interest. Here, we report a lead-free photoluminescent COIHS [R-3-hydroxylpiperidinium]2SbCl5 with a bandgap of 3.14 eV. It shows a ferroelastic phase transition at 341 K accompanied by a switchable second-harmonic generation response and presents clear ferroelastic domains, which are rarely found in lead-free COIHSs.
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