info:eu-repo/semantics/article
Colloids of naked CH 3 NH 3 PbBr 3 Perovskite Nanoparticles: Synthesis, Ssability, and thin solid film deposition
Fecha
2018-01Registro en:
Gonzalez-Carrero, Soranyel; Schmidt, Luciana Carina; Rosa-Pardo, Ignacio; Martínez-Sarti, Laura; Sessolo, Michele; et al.; Colloids of naked CH 3 NH 3 PbBr 3 Perovskite Nanoparticles: Synthesis, Ssability, and thin solid film deposition; American Chemical Society; ACS Omega; 3; 1; 1-2018; 1298-1303
2470-1343
CONICET Digital
CONICET
Autor
Gonzalez-Carrero, Soranyel
Schmidt, Luciana Carina
Rosa-Pardo, Ignacio
Martínez-Sarti, Laura
Sessolo, Michele
Galian, Raquel E.
Perez Prieto, Julia
Resumen
A novel preparation of lead halide, CH3NH3PbBr3, perovskite nanoparticle solid films from colloidal "naked" nanoparticles, that is, dispersible nanoparticles without any surfactant, is reported. The colloids are obtained by simply adding potassium ions, whose counterions are both more lipophilic and less coordinating than bromide ions, to the perovskite precursor solutions (CH3NH3Br/PbBr2 in dimethylformamide) following the reprecipitation strategy. The naked nanoparticles exhibit a low tendency to aggregate in solution, and they effectively self-assembled on a substrate by centrifugation of the colloid, leading to homogeneous nanoparticle solid films with arbitrary thickness. These results are expected to spur further the interest in lead halide perovskites due to the new opportunities offered by these films.