@article{Yang2025, 
author = {Zhi Yang and Yunlong Bai and Jiandong Yao and Jie Wu and Sheng Cao and Yangding Qiu and Bingsuo Zou and Mingjian Yuan and Jialiang Xu and Lingyu Wan and Ruosheng Zeng},
title = {High-sensitivity self-powered circularly polarized light detection based on chiral antimony-based halides with strong polarity},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {8},
pages = {94907554},
keywords = {lead-free, self-powered, polarity, chiral halides, circularly polarized light detection},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907554},
doi = {10.26599/NR.2025.94907554},
abstract = {Chiral organic-inorganic hybrid halides show significant potential for applications in circularly polarized photodetection, chiral-induced spin selectivity effects (CISS), and nonlinear optics. However, the widespread use of toxic lead element poses environmental concerns, hindering the further applications. Herein, we synthesized a zero-dimensional (0D) lead-free chiral antimony-based halide (R/S-MBA)4Sb2Br10 with the coexistence of polarity and crystallographic chirality. The halides exhibit unique magneto-chiroptical effects due to the field-effect-induced fine-tuning of exciton energy, which is the first observation in chiral antimony-based halides. Furthermore, owing to its significant spontaneous polarization (5.0 μC/cm2) and optical chirality (gCD = 0.0018), (R/S-MBA)4Sb2Br10 halide exhibits excellent performance in self-powered circularly polarized photodetection, nonlinear optics, and CISS effects. The self-powered photodetector demonstrates high sensitivity with distinguishable factors (gres = 0.53/−0.51 @ 0 V) and broad spectral response. The single crystal (R/S-MBA)4Sb2Br10 also exhibits a high second-harmonic polarization response asymmetry factor (gSHG-CD = 0.98/−0.70) and strong second-harmonic generation intensity. These performances are among the best reported for chiral halides. Our research not only sheds new light on the investigation of magneto-chiroptical phenomena, but also marks a significant advancement in realizing high-sensitivity circularly polarized light detection within the realm of lead-free polar materials.}
}