Scale-Up Synthesis Of Organometal Halide Perovskite Nanocrystals (Mapbx(3), X = Ci, Br, And I)
ACS SUSTAINABLE CHEMISTRY & ENGINEERING(2019)
摘要
Ligand-assisted ball milling has attracted lot of attention due to its ability for the scalable synthesis of nanoscale organic-inorganic perovskite (OIP) materials. We found that this technique can be successfully extended for the formation of ternary OIP nanocrystals (NCs) as well as doping of transition-metal cations into the host OIP NCs. Here, a wide range of compositional variation of halogen anions (X = Cr-, Br-, I-) as well as doping of transition-metal cations (Mn2+) could be achieved by ligand-assisted ball milling, demonstrating that the strategies for cation/anion exchange can be applied to the large-scale synthesis of OIP NCs to control their photoluminescence emission and bandgap energies. Therefore, this technique provides a low-cost and facile route for mass production of exfoliated OIP NCs to overcome the most prominent challenges for future advances of OIP materials.
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关键词
organometal halide perovskites, nanocrystals, ligands, ball milling, exfoliation, quantum yield, photoluminescence
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