Enhanced Solar Photoelectrochemical Conversion Efficiency of ZnO:Cu Electrodes for Water-Splitting Application

Table 1

Crystallite size and microstrain estimated from XRD studies for all ZnO films.

(Cu^2+) initial content (μM)	Crystallite size (nm)	Microstrain 𝜀 (10^−3)
0	14	0.15
0.1	14	0.15
0.3	14	0.15
1.3	18	0.11
26.4	17	0.12