Structure and optical properties of lead iodide based two-dimensional perovskite compounds containing fluorophenethylamines |
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Authors: | K Kikuchi Y Takeoka M Rikukawa K Sanui |
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Institution: | a Department of Chemistry, Sophia University, 7-1, Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan;b PRESTO, Japan Science and Technology Agency, 4-1-8, Hon-cho, Kawaguchi, Saitama 332-0012, Japan |
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Abstract: | Phenethylammonium-based perovskites, which can be regarded as a semiconductor/insulator multiple quantum well consisting of lead halide semiconductor layers sandwiched between phenethylammonium insulator layers were prepared. To investigate the effects of the electronic state and the orientation of organic insulator layers on the optical properties of layered perovskites, fluorine substituted analogues were also prepared. The structure and optical properties were investigated by the XRD, UV–Vis absorption, and fluorescence measurements. The exciton absorption peak was shifted by the substitution of fluorine atoms in organic ammonium compounds. It became clear that the optical properties of two-dimensional perovskite compounds were controlled by the substitution of fluorine atoms. |
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Keywords: | Quantum confinement effect Perovskite Polycrystalline thin films Optical absorption and emission spectroscopy |
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