Colloids of Naked CH3NH3PbBr3 Perovskite Nanoparticles: Synthesis, Stability, and Thin Solid Film Deposition

被引：17

作者：

Gonzalez-Carrero, Soranyel ^{[1
]}

Schmidt, Luciana C. ^{[1
,2
]}

Rosa-Pardo, Ignacio ^{[1
]}

Martinez-Sarti, Laura ^{[1
]}

Sessolo, Michele ^{[1
]}

Galian, Raquel E. ^{[1
]}

Perez-Prieto, Julia ^{[1
]}

机构：

[1] Univ Valencia, Inst Mol Sci, ICMOL, Catedrat Jose Beltran 2, Valencia 46980, Spain

[2] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Quim Organ, INFIQC UNC CONICET, Ciudad Univ,X5000HUA, Cordoba, Argentina

来源：

ACS OMEGA | 2018年 / 3卷 / 01期

关键词：

HYBRID PEROVSKITES; PHOTOLUMINESCENCE; NANOCRYSTALS; LUMINESCENT; BR;

D O I：

10.1021/acsomega.7b02052

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1298 / 1303

页数：6

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