Temperature-Responsive Photoluminescence of 1D Chiral Lead Halide Perovskites with Highly Anisotropic Second Harmonic Generation
Ya-Si Fang , Yi-Fan Guo , Xiao-Gang Chen , Zhong-Xia Wang , Yan Qin
Chinese Journal of Chemistry ›› 2025, Vol. 43 ›› Issue (9) : 1001 -1008.
Chiral perovskites provide an ideal platform for the construction of linear and nonlinear optical materials due to their diverse chemical variability, structural tunability, and intrinsic non-centrosymmetricity which have broad application prospects for next-generation optoelectronic devices. In this work, a pair of 1D chiral lead halide perovskites (R/S-4MeOPEA)PbCl3 (4MeOPEA = (4-methoxyphenyl)ethylamine) were synthesized, and characterized systematically. Crystal structure analysis revealed that the one-dimensional (1D) inorganic chain formed by face-shared lead chloride octahedra was separated by the chiral organic spacers. The distorted octahedra endows them with broadband bluish-white light emission centered covering the range 350—700 nm with a width of 104 nm. In addition, the highly anisotropic second-harmonic generation (SHG) with a near unity polarization ratio was observed. This work presents a fresh example of 1D chiral perovskite with exotic linear and nonlinear optical properties, which could provide a new footstone for further optoelectronic devices.
Chiral perovskite / Organic-inorganic hybrid composites / Temperature-responsive photoluminescence / Second harmonic generation / Chain structures / Low-dimensional materials
2025 SIOC, CAS, Shanghai, & WILEY-VCH GmbH
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