Zhang Chengshu, Wu Zhenyue, Zhang Wanning, Guan Qianwen, Ye Huang, Li Ruiqing, Li Hang, Zhu Zeng-Kui, Wang Peng, Wang Yifei, Fang Yuxi, Luo Junhua
State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.
J Am Chem Soc. 2025 Mar 19;147(11):9686-9693. doi: 10.1021/jacs.4c17796. Epub 2025 Mar 5.
The chiral-polar photovoltaic effect (CPPE), widely present in chiral hybrid perovskites, has brought an unprecedented opportunity for self-powered circularly polarized light (CPL) detection. However, on account of spatial limitations of the crystal structure, currently reported CPPE primarily focuses on low-dimensional hybrid perovskites, which have a low CPL photoresponse restricted by lower carrier transport efficiency compared to three-dimensional perovskites. For the first time, we reported chiral-polar photovoltage-driven efficient self-powered CPL detection in three-dimensional chiral-polar perovskites, MHyPbBr (MHy = Methylhydrazinium). Coupled with significant spontaneous polarization (17.1 μC cm) and superior semiconductor properties, MHyPbBr exhibits a large mobility-lifetime product (1.9 × 10 cm V) and stable bulk photovoltage (3.9 V). Furthermore, the devices indicate significant chiral-polar photovoltage for self-powered CPL detection with a robust angle anisotropy factor of 0.39. More importantly, benefiting from excellent carrier transport performance, high responsivity and detectivity values of up to 39.2 mA W and 5.8 × 10 Jones, respectively, are presented at zero bias, which fall around the highest values of hybrid perovskites. This work will contribute to the research of novel chiral-polar three-dimensional hybrid perovskite semiconductors and promote their application in efficient self-powered CPL detection.
手性-极化光伏效应（CPPE）广泛存在于手性杂化钙钛矿中，为自供电圆偏振光（CPL）检测带来了前所未有的机遇。然而，由于晶体结构的空间限制，目前报道的CPPE主要集中在低维杂化钙钛矿上，与三维钙钛矿相比，其载流子传输效率较低，导致CPL光响应较低。我们首次报道了在三维手性-极化钙钛矿MHyPbBr（MHy = 甲基肼鎓）中，由手性-极化光电压驱动的高效自供电CPL检测。结合显著的自发极化（17.1 μC cm）和优异的半导体性能，MHyPbBr展现出较大的迁移率-寿命乘积（1.9 × 10 cm² V⁻¹ s⁻¹）和稳定的体光伏电压（3.9 V）。此外，这些器件在自供电CPL检测中表现出显著的手性-极化光电压，具有0.39的稳健角度各向异性因子。更重要的是，得益于优异的载流子传输性能，在零偏压下分别呈现出高达39.2 mA W⁻¹ 和5.8 × 10¹² Jones的高响应度和探测率值，这处于杂化钙钛矿的最高值范围内。这项工作将有助于新型手性-极化三维杂化钙钛矿半导体的研究，并推动其在高效自供电CPL检测中的应用。
