“…Note that OA and OAm have the solubility parameters of 7.9 cal 1/2 cm −3/2 and 8.0 cal 1/2 cm −3/2 , respectively, exhibiting they are nonpolar, like antisolvent. 54 However, the CsPbBr 3 -surface ligand complex is still polar, allowing the polar DMF to act as a good solvent. In addition, it is notable that DMF is a retrograde solvent, 55 indicating that the degree of supersaturation will be enhanced with increasing temperature because the solubility of perovskite precursor in DMF will decrease with increasing temperature.…”
“…Note that OA and OAm have the solubility parameters of 7.9 cal 1/2 cm −3/2 and 8.0 cal 1/2 cm −3/2 , respectively, exhibiting they are nonpolar, like antisolvent. 54 However, the CsPbBr 3 -surface ligand complex is still polar, allowing the polar DMF to act as a good solvent. In addition, it is notable that DMF is a retrograde solvent, 55 indicating that the degree of supersaturation will be enhanced with increasing temperature because the solubility of perovskite precursor in DMF will decrease with increasing temperature.…”
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