Synthesis of Binary Bi₂S₃/ZnO Nanorod Array Heterostructure and Their Photoelectrochemical Performance

Figure 3

(a) UV-Vis spectra; (b) band gap energy curves of (A) ZnO NRs/ITO and Bi₂S₃/ZnO NRAs/ITO prepared at different SILAR cycles (B) 3 cycles, (C) 5 cycles, (D) 7 cycles, (E) 9 cycles, and (F) 11 cycles, and the inset plot shows SILAR cycle number vs. change in optical band gap energy.

(a)

(b)