2024
DOI: 10.1021/acs.cgd.4c00522
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Tunable Optical Properties of Two-Dimensional Copper-Based Halide Perovskites with Mixed Organic Cations

Jing Cao,
Xiaoyu Xiong,
Ji Zhou

Abstract: Copper-based halide perovskites are evolving as alternative materials to lead-based perovskites. Herein, we report the synthesis of double organic cation copper-halide perovskites (C4H9NH3) x (3-BrC3H6NH3)2–x CuCl2 +x Br2–x (x = 0.7, 1.0, 1.3, 1.6, and 1.9). The crystal structures were studied by powder X-ray diffraction (XRD). The optical properties of the perovskite thin films were investigated by UV–vis absorption spectroscopy and spectroscopic ellipsometry. It was demonstrated that the use of multiple cat… Show more

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