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

Table 2

Fast and slow decay times along with their amplitudes, average lifetime (), and carrier injection efficiency () for Au/R-ZnO and Au/E-ZnO Schottky-heterojunction nanocomplex with different Au NP deposition times, respectively.

Sample codes	(ns)	(%)	(ns)	(%)	(ns)	(%)
Au/R-ZnO 20 s	2.06	70.6	5.74	29.4	4.04	—
Au/E-ZnO 0 s	3.24	73.3	7.35	26.7	5.15	—
Au/E-ZnO 20 s	3.71	64.8	8.66	35.2	6.46	25.43
Au/E-ZnO 40 s	3.92	58.9	9.33	41.1	7.31	41.95
Au/E-ZnO 80 s	3.42	68.5	7.82	31.5	5.68	10.29