Solvent-Mediated Structural Evolution Mechanism from Cs4PbBr6 to CsPbBr3 Crystals

Correction to “Hybridization of Single Nanocrystals of Cs4PbBr6 and CsPbBr3”

■ REFERENCES (1) Tizei, L. H. G.; Lin, Y.-C.; Mukai, M.; Sawada, H.; Lu, A.-Y.; Li, L.J.; Kimoto, K.; Suenaga, K. Exciton Mapping at subwavelength scales in two-dimensional materials. Phys. Rev. Lett. 2015, 114, 107601. (2) Sasaki, T.; Sawada, H.; Hosokawa, F.; Sato, Y.; Suenaga, K. Aberration-corrected STEM/TEM imaging at 15kV. Ultramicroscopy 2014, 145, 50−55. (3) Velaźquez, M.; Ferrier, A.; ...

Hybridization of Single Nanocrystals of Cs4PbBr6 and CsPbBr3

Nanocrystals of all-inorganic cesium lead halide perovskites (CsPbX3, X = Cl, Br, I) feature high absorption and efficient narrow-band emission which renders them promising for future generation of photovoltaic and optoelectronic devices. Colloidal ensembles of these nanocrystals can be conveniently prepared by chemical synthesis. However, in the case of CsPbBr3, its synthesis can also yield na...

Solution-Grown CsPbBr3 Perovskite Single Crystals for Photon Detection

Reversible light-mediated compositional and structural transitions between CsPbBr3 and CsPb2Br5 nanosheets.

This communication describes a new method to achieve reversible light-induced chemical composition and phase structural transitions from polyvinylpyrrolidone-capped orthorhombic CsPbBr3 to tetragonal CsPb2Br5 nanosheets or vice versa. This work will deepen our understanding of the controlled synthesis, post-processing, and decomposition pathway of cesium lead halide perovskite nanocrystals.

Postsynthesis Transformation of Insulating Cs4PbBr6 Nanocrystals into Bright Perovskite CsPbBr3 through Physical and Chemical Extraction of CsBr

Perovskite-related Cs4PbBr6 nanocrystals present a "zero-dimensional" crystalline structure where adjacent [PbBr6]4- octahedra do not share any corners. We show in this work that these nanocrystals can be converted into "three-dimensional" CsPbBr3 perovskites by extraction of CsBr. This conversion drastically changes the optoelectronic properties of the nanocrystals that become highly photolumi...