Journal of Nanomaterials / 2019 / Article / Fig 3

Research Article

Decreased Surface Photovoltage of ZnO Photoanode Films via Optimal Annealing Temperature for Enhanced Photoelectrochemical Performance

Figure 3

(a) UV-vis absorption spectra and (b) the corresponding vs. curves of unannealed ZnO, ZnO-350, ZnO-450, and ZnO-550. Photoluminescence (PL) spectra of unannealed ZnO, ZnO-350, ZnO-450, and ZnO-550: (c) 300~720 nm and (d) 370~450 nm.
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