Figure 7

(a) Time-resolved PL of the uncoated ZnO with a lifetime of τZnO = (161 ± 4) ps and (b) of the Al-coated ZnO, showing a reduced lifetime of τZnO+Al ≤ 53 ps.

(a) Time-resolved PL of the uncoated ZnO with a lifetime of τZnO = (161 ± 4) ps and (b) of the Al-coated ZnO, showing a reduced lifetime of τZnO+Al ≤ 53 ps.