Related Experiment Video
Updated: Apr 21, 2026
Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
Magnetically Responsive Semiconducting Liquid Crystals of Organic-Inorganic Metal Halide Perovskites: Dynamically
Min Huang1,2, Kejie Guan1,2, Xuelian Jiang1,2
1School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China.
Abstract:
The generation of polarized light is central to optoelectronics. While conventional polarizers inherently waste over half of the incident light energy, luminescent liquid crystals offer an efficient alternative by directly emitting polarized photons, owing to their self-assembled anisotropic superstructures. Herein, contactless and reversible magnetic orientational control was introduced into luminescent liquid crystalline materials by doping colloidal dispersions of two-dimensional nanoparticles of organic-inorganic metal halide perovskites with magnetite nanorods. The products exhibited discotic nematic ordering, tunable semiconducting bandgaps, and magnetic responsiveness. Anisotropic microdomains formed in these liquid crystals could be unidirectionally aligned along weak (0.2 t) magnetic fields from ferrite magnets, thus enabling dynamic manipulation of the polarization direction of emitted linearly polarized light. This study presents a new approach to semiconductors with structural orderliness and may guide the development of reconfigurable photonic devices.
