Solvent-free mechanochemical syntheses of microscale lead-free hybrid manganese halides as efficient green light phosphors
| Autor: | Wen-Jie Xu, Han-Qi Fu, Ying-Rui Song, Qian-Qian Zhong, Xue-Lei Liu, Cheng-Yang Yue, Xiao-Wu Lei, Yue-Yu Ma |
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| Rok vydání: | 2021 |
| Předmět: |
Photoluminescence
Materials science Quantum yield Halide chemistry.chemical_element Phosphor 02 engineering and technology General Chemistry Manganese 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Metal halides chemistry Chemical engineering Materials Chemistry 0210 nano-technology Luminescence Perovskite (structure) |
| Zdroj: | Journal of Materials Chemistry C. 9:9952-9961 |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | A facile, green and economical preparation technique is critical for the cost-effective scale-up manufacture and optoelectronic device engineering of halide perovskites. Herein, we developed a viable solvent-free mechanochemical synthetic route to systematically prepare organic–inorganic hybrid perovskites. In this work, an enormous halide library comprising 16 zero-dimensional hybrid manganese halides with the formula of AnMnX4 (A = organic cations, X = Cl, Br, n =1, 2) was synthesized through an economically and environmentally friendly mechanical grinding solid-state reaction within a quite fast time of 40 s and 100% yield. Even without any crystallization process, these AnMnX4 display strong green light emissions with the highest photoluminescence quantum yield (PLQY) of 79.5%, which reaches up to the top rank of green-light-emitting halide perovskites. Moreover, the enormous structural library facilitates us to build up a direct correlation between intermolecular Mn⋯Mn distances and PLQY, which provides a feasibility of fine-tuning luminescence performance by reasonably managing organic species to tailor the Mn⋯Mn distance. This work not only paves a green assembly way of hybrid perovskite materials but also provides a generalized method to rationally optimize the luminescence performances of hybrid manganese halides, which is potentially extended to all emissive hybrid metal halides. |
| Databáze: | OpenAIRE |
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