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

Figure 12

(a)–(d) The normalized NTRT-PL spectra of pristine R-ZnO, and Au/R-ZnO Schottky heterojunction nanocomposites for different deposition times (20s, 40s, and 80s), respectively.

(a)

(b)

(c)

(d)