图6. 添加剂工程优化Cs₂AgBiBr₆薄膜

Fig. 6. Additive engineering optimization of Cs₂AgBiBr₆ films
(a) Schematic illustration of MABr additive assisted Cs₂AgBiBr₆ crystallization process; (b) SEM images of Cs₂AgBiBr₆ films prepared (left) without and (right) with MABr^[66]; (c) Schematic diagram of the mechanism of additive GuaSCN in the formation process of Cs₂AgBiBr₆ film; (d) SEM images of Cs₂AgBiBr₆ films prepared (left) without and (right) with GuaSCN ^[67]; (e) Schematic illustration of BMPyr⁺-Br^- interaction between ionic liquid BMPyrCl and Cs₂AgBiBr₆ perovskite; (f) SEM images of Cs₂AgBiBr₆ films prepared (left) without and (right) with BMPyrCl^[70]. Colorful figures are available on website