Erbium-doped CsPbBr3 perovskite single crystal and preparation method thereof

The invention provides a preparation method of an erbium-doped CsPbBr3 perovskite single crystal, which comprises the following steps: preparing a precursor solution: dissolving CsBr, PbBr2 and ErBr3 in a DMSO solution, and stirring until the solution is transparent to prepare the precursor solution; pre-saturating the precursor solution: adding an anti-solvent into the precursor solution until CsPbBr3 precipitate appears, so as to obtain a pre-saturated solution; and single crystal growth: carrying out steam-assisted crystallization on the pre-saturated solution by using a mixed solvent of an anti-solvent and DMSO (Dimethylsulfoxide). The preparation method of the rare earth erbium-doped perovskite single crystal is used for preparing the Er < + >-doped CsPbBr3 perovskite single crystal, and a new method thought is provided for preparing the rare earth-doped perovskite single crystal. 本发明提供了一种铒掺杂CsPbBr3钙钛矿单晶的制备方法，包括：前驱液配置：以DMSO溶液溶解CsBr，PbBr2，ErBr3搅拌直至溶液透明，制成前驱体溶液；前驱液预饱和：将反溶剂加入所述前驱体溶液，直至出现CsPbBr3沉淀，得到预饱和溶液；单晶