Preparation of Cu₂Sn₃S₇ Thin-Film Using a Three-Step Bake-Sulfurization-Sintering Process and Film Characterization

Figure 2

Morphology of CTS films sintered at (a) 200, (b) 300, (c) 400, (d) 500, (e) 600, and (f) 700°C.

(a)

(b)

(c)

(d)

(e)

(f)