Sb₂S₃ Quantum-Dot Sensitized Solar Cells with Silicon Nanowire Photoelectrode

Figure 3

SEM images of the fabricated SNA under a constant first-stage processing time of 30 sec and various second-stage processing times: (a) second-stage processing time: 1 min, (b) 2 min, (c) 3 min, and (d) 4 min.

(a)

(b)

(c)

(d)