Toward the green synthesis of CsPbBr₃perovskite nanocrystals using ethanol as an antisolvent and cyclodextrin as a ligand

Abstract

Metal halide perovskite nanocrystals (PNCs) exhibiting excellent optoelectronic properties has been popularly synthesized by the ligand-assisted reprecipitation (LARP) method. However, the application of the LARP for the large-scale production of...

Green-route manufacturing towards future industrialization of metal halide perovskite nanocrystals

“…The CHAPS containing sulfonic group has a strong binding with surface Pb 2+ atoms of CsPbBr 3 NCs and acts as capping ligand to passivate surface defects of the NCs. For the same materials (CsPbBr 3 NCs), Zhang et al 37 and Liang et al 38 used EtOH as an antisolvent toward a green synthesis process. Adding the ligand of α-cyclodextrin (CD) led to the formation of α-CD@CsPbBr 3 with an average size of 35 nm and a PLQY (photoluminescence quantum yield) of 86.0%; the formed α-CD@CsPbBr 3 maintained in EtOH for 6 months only experienced a loss of less than 10% in luminescence.…”

“…Adding the ligand of α-cyclodextrin (CD) led to the formation of α-CD@CsPbBr 3 with an average size of 35 nm and a PLQY (photoluminescence quantum yield) of 86.0%; the formed α-CD@CsPbBr 3 maintained in EtOH for 6 months only experienced a loss of less than 10% in luminescence. 37 Note that EtOH is a polar solvent, and an antisolvent is always a kind of non-polar solvent. In this case, the extraordinary application of EtOH as an antisolvent should be further investigated.…”