Synthesis and Characterization of CZTS Thin Films by Sol-Gel Method without Sulfurization

Figure 2

XPS spectra of 9-LAY and 9-LAY-ANN CZTS thin films: (a) Cu 2p, (b) Zn 2p, (c) Sn 3d, and (d) S 2p.

(a)

(b)

(c)

(d)