A Simple and Facile Solvothermal Synthesis of Hierarchical PbS Microstars with Multidendritic Arms and Their Optical Properties

Figure 4

SEM images of the products obtained at different reaction temperature: 140°C (a), 160°C (b), 200°C (c), and 220°C (d).

(a)

(b)

(c)

(d)