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

Figure 6

Photocurrent action spectra of (a) unannealed and (b) annealed Cu-doped CdS films with different doping levels. (The electrode potential is fixed at 0.3 V versus SCE in 0.5 M Na₂SO₃ aqueous solution.)

(a)

(b)