2026-09-24 中国科学院（CAS）
Schematic illustration of electrically switchable circularly polarized light detection enabled by ferroelectric polarization reversal. (Image by FJIRSM)
＜関連情報＞
- https://english.cas.cn/newsroom/research-news/202609/t20260925_1201511.shtml
- https://onlinelibrary.wiley.com/doi/10.1002/ange.5199246
光活性強誘電体における電気的に切り替え可能な円偏光検出 Electrically Switchable Circularly Polarized Light Detection in Optically Active Ferroelectric
Xin Dong, Zhijin Xu, Yaru Geng, Haotian Wen, Junhua Luo, Lina Li
Angewandte Chemie International Edition Published: 01 September 2026
DOI:https://doi.org/10.1002/ange.5199246
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.
