Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 24, Pages 19369-19374Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b03153
Keywords
organometal halide perovskites; nanocrystals; ligands; ball milling; exfoliation; quantum yield; photoluminescence
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Funding
- National Research Foundation of Korea (NRF) - Korean government [NRF-2019R1 I1A2A0 1060608]
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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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