Manipulating perovskite structural asymmetry for high-performing self-powered full-stokes polarimetry
Quanlin Chen, Mingwei Ge, Cong Geng, Jia Zhang, Linyue Gao, Zhuanzhuan Huang, Saike Wang, Yanxing Feng, Xinxin Yue, Saif M. H. Qaid, Xuewen Fu, Mei Wang, Yuanzhi Jiang, Mingjian Yuan
Abstract
Developing direct full-stokes imaging polarimetry is essential for various applications but remains challenging. Perovskites have superior optoelectronic properties and structural diversity, making them ideal candidates for high-performing direct full-stokes polarimetry. However, perovskite suffers low chiroptical activity due to inefficient chiral transfer, which greatly limits its circular-polarization-vector discrimination. These issues urgently require remedy. Here, we demonstrate that perovskites’ chiroptical activity is highly related to their structural chiral-distortion extent. We propose using halide mixing to construct asymmetric chiral transfer to heighten its structural chiral-distortion extent. Accordingly, we report a 16-fold increment in the optical chiroptical activity. Further ab initio calculations verify that the enhancement is due to the strengthened magnetic transition dipole in mixed-halide structures. We herein report a self-powered, direct full-Stokes polarimetry with a high detectivity up to 1.2 × 10 12 Jones and low detection errors (Δ S 1–3 ≤ 5.0%). We further showcase their application in full-stokes imaging polarimetry with the lowest detection errors yet.