Structural and Photoelectrochemical Properties of Cu-Doped CdS Thin Films Prepared by Ultrasonic Spray Pyrolysis

Figure 1

SEM images of Cu-doped CdS films: (a) 0 at.% doped, (b) 0.5 at.% doped, (c) 1 at.% doped, (d) 2 at.% doped (inset is its cross-sectional view), (e) 4% at.% doped, and (f) 5% at.% doped.

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