Electrically Switchable Circularly Polarized Light Detection in Optically Active Ferroelectric.

Authors

Xin Dong, Zhijin Xu, Yaru Geng, Haotian Wen, Junhua Luo, Lina Li

Published in

Angewandte Chemie (International ed. in English). Pages e5199246. Sep 01, 2026. Epub Sep 01, 2026.

Abstract

Circularly polarized light (CPL) detection is fundamental to advanced photonic and optoelectronic technologies, yet electrically reversible control of CPL selectivity remains a critical challenge. Optically active ferroelectrics are uniquely suited to address this challenge because they integrate symmetry-enabled optical activity, switchable spontaneous polarization, and the bulk photovoltaic effect (BPVE) within a single material platform. Herein, we report an optically active hybrid perovskite ferroelectric, BnA₂MA₂Pb₃Br₁₀ (1; BnA is 3-butenylammonium, MA is methylammonium), in which electrically switchable CPL detection is successfully achieved. Leveraging the BPVE in 1, the device exhibits highly sensitive self-powered CPL detection, with an anisotropy factor of up to 0.62. More importantly, ferroelectric polarization reversal reverses the CPL selectivity, enabling electrically reconfigurable CPL detection. This work establishes optically active ferroelectrics as a viable platform for electrically reconfigurable self-powered chiroptoelectronic devices.

PMID:
42678015
Bibliographic data and abstract were imported from PubMed on 01 Sep 2026.

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