Fig. 1: Mechanically soft, efficiently luminescent, and environmentally stable perovskite nanocomposites.
From: Aromatic nonpolar organogels for efficient and stable perovskite green emitters
Synergistic combination of two materials: (i) methylammonium lead bromide (MAPbBr3) PNCs composed of physically dispersible ligand (M-PNC) or chemically crosslinkable ligand (V-PNC) as highly efficient and pure green emitters, with (ii) aromatic interaction-induced nonpolar organogels (AINOs) consisting of polystyrene network swollen by phenyl alkanes as passivating matrices for the PNCs. Due to the nonpolar and hydrophobic nature of the AINO, the resulting nanocomposites (PNC@AINOs) complement the luminescence and mechanical property of their parents without trade-off, while their nonpolar environment enhances luminescence stability under various environments, such as air (oxygen), water, acid, base, heat, light, and mechanical stress. Furthermore, the luminescence efficiency of the PNC@AINO is increased after water exposure, reaching near unity (~99.8%). ε dielectric constant.
