“…Nowadays, ZnO is being used as an electronic material in photonics, optoelectronics, varistors, transparent power electronics, surface acoustic wave devices, piezoelectric transducers, ultra-violet (UV) light emitters, sensors, and solar cells [138]. Nevertheless, ZnO properties such as wide band gap (3.3 eV), high melting point (1975 • C), low thermal expansion, and high electron mobility (2000 cm 2 /(Vs)) [137] give ZnO the advantages of high breakdown voltage, ability to sustain large electrical fields, lower electronics noise, high temperature and high-power operation.…”