“…In addition to having a wide-band-gap, ZnO also has high activation energy [8]. This material has several applications in various fields, such as electronics [9], photo-detectors [10], light-emitting diodes [11], laser diodes [12], catalysts [13], solar cells [14], sensors [15], and optical devices [16]. The successful use of this material in various devices requires clear understanding of the behavior of its main characteristics under the action of varying external factors such as temperature, irradiation, etc.…”