Single Crystallization of Cs₄PbBr₆ Perovskite from Supersaturated Organic Solutions Optimized Through Solubility Studies.

ABSTRACT: We demonstrate the fabrication of millimeter-sized single crystals of 0D-Cs₄PbBr₆ grown in a supersaturated solution consisting of organic solvents without HBr (aq). One of the precursors, CsBr, was dissolved in ethylene glycol (EG) mixed with dimethyl sulfoxide, which is a good solvent for the other precursor, PbBr₂. At a solvent ratio of 20 vol % EG, the solubility of cesium bromide decreased and the title compound, Cs₄PbBr₆, was selectively formed, whereas, with an EG ratio of 80 vol %, 3D-CsPbBr₃ was formed. A phase diagram (solubility curve) of Cs₄PbBr₆ in the mixed solvent containing 20 vol % EG was obtained by visually observing dissolution and crystal precipitation while changing the temperature

SUBMITTER: Watanabe S 

PROVIDER: S-EPMC9850476 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature