Oxygen Vacancy-Mediated Interfacial Charge Transfer of Au/ZnO Schottky Heterojunctions for Enhanced UV Photodegradation

Figure 9

(a)–(d) Steady-state photoluminescence (PL) spectra of Au/ZnO Schottky heterojunction nanocomposites with different deposition times (0 s, 20 s, 40 s, and 80 s) excited by 266 nm, respectively.

(a)

(b)

(c)

(d)