In current study, a facile one-pot approach was introduced for the preparation of CsPbBr₃/Cs₄PbBr₆ composite. The formation mechanism behind this proposed approach was investigated in detail. As the results shown, the structure observations by XRD and HRTEM suggested the obtained sample, prepared under an optimal condition of (90 ℃, 20 min), was in a miscible phase of CsPbBr₃/Cs₄PbBr₆. The morphology analysis by TEM illustrated the sample monodispersed as a clear cubic shape with an average size of ∼10 nm. The composition examination by EDS revealed a Pb-poor and Br-rich state which was favorable for the Cs₄PbBr₆ formation. Particularly, the synthesized sample had a narrow line-width of ∼22 nm, a photoluminescence quantum yield of ∼57 %, and a color purity of 88 %. This indicates the obtained sample is a promising candidate in lighting and display field.

在当前的研究中，引入了一种简便的一锅法制备CsPbBr ₃ / Cs ₄ PbBr ₆复合材料。详细研究了此提议的方法背后的形成机制。结果表明，XRD和HRTEM的结构观察表明，在最佳条件下（90℃，20 min）制备的样品处于CsPbBr ₃ / Cs ₄ PbBr ₆的混溶相。通过TEM进行的形态分析表明，样品以透明立方体的形式单分散，平均尺寸为〜10 nm。EDS的成分检查表明，Pb少且富含Br的状态对Cs ₄ PbBr ₆有利编队。特别地，合成样品具有〜22nm的窄线宽，〜57％的光致发光量子产率和88％的色纯度。这表明获得的样品是照明和显示领域的有希望的候选者。