Table 2.

Parameters of the ZnO SL crystals extracted by XRD analysis.

Annealing Ambient for SL	(002) 2θ (°)	(002) FWHM (°)	Grain Size (nm)	(002) Spacing (Å)	Degree of (002) Orientation
Vacuum	34.44	0.156	55.6	2.600	0.98
Air	34.53	0.303	30.4	2.594	0.66
Nitrogen	34.54	0.304	28.3	2.593	0.61