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

Figure 3

SEM images of the products obtained with different reaction time: 0.5 h (a), 1 h (b), 8 h (c), and 16 h (d).

(a)

(b)

(c)

(d)