DataVXACS Energy LettersPaper
journal article·2025-11-14Open access

Chirality Switching of Amplified Spontaneous Emission in Halide Perovskites via Motor-Doped Chiral Liquid Crystals

Ming Yuan, Haoyuan Xu, Jiaxin Liu, Wei Zhou, Minghao Zhao, Xiao-Fang Jiang, Jiawen Chen, Lakshminarayana Polavarapu, Guofu Zhou, Xiaowen Hu

ACS Energy Letters· Volume 10· Issue 11
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Abstract

High Resolution Image Download MS PowerPoint Slide Circularly polarized (CP) coherent light sources are pivotal for advanced photonics, including chiral sensing, spin-optoelectronics, and quantum communication. However, achieving dynamic and reversible control over their chirality remains challenging. Here, we demonstrate a chirality-invertible CP light source by integrating a photoresponsive cholesteric liquid crystal (CLC) modulation layer with a polycrystalline perovskite gain medium. Under ultraviolet irradiation, the CLC layer undergoes reversible handedness inversion, enabling dynamic switching of the chirality of the perovskite’s amplified spontaneous emission (ASE). The device features switchable CP-ASE with a tunable circular polarization dissymmetry factor ( g lum ) ranging from −1.38 to +1.22. Furthermore, broadband CP-ASE emission from green to near-infrared is achieved by tailoring the perovskite halide composition. This work presents a versatile strategy for fabricating reconfigurable CP light sources, offering new avenues toward spin-polarization switchable chiral laser devices.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Random lasers and scattering media · Quantum optics and atomic interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics

South China Normal University

Key Laboratory of Atomic and Subatomic Structure and Quantum Control (Ministry of Education), School of Physics

SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics

CINBIO, Universidade de Vigo, Materials Chemistry and Physics Group, Department of Physical Chemistry, Campus Universitario Lagoas Marcosende, 36310 Vigo, Spain

Shenzhen Guohua Optoelectronics Tech. Co. Ltd.

Funding

Science and Technology Foundation of Shenzhen City · Universidade de Vigo · Guangzhou Municipal Science and Technology Project · National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province · Higher Education Discipline Innovation Project · South China Normal University · Guangdong Provincial Key Laboratory of Optical Information Materials and Technology · MOE International Laboratory for Optical Information Technologies

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