The donor density (N_D) and the film thickness (δ) for the oxide film formed spontaneously on Zn electrode in buffer solutions of pH 9.8 and 9.2 at different temperatures.

T (°C)	N D (cm−3)	δ (Å)
pH 9.8
5	2.11 × 1021	14.22
15	1.19 × 1021	12.88
25	1.18 × 1021	9.59
35	1.00 × 1021	4.36
45	3.35 × 1019	3.62
pH 9.2
5	3.22 × 1020	14.49
15	2.98 × 1020	13.01
25	1.81 × 1020	8.44
35	2.68 × 1018	7.72
45	2.26 × 1018	7.11