“…It has potential applications in various devices, such as dye-sensitized (photoelectrochemical, quasisolid, and solid-state) solar cells (DSSCs), sensors, varistors, surface acoustic wave devices, transparent conducting oxide electrodes and light-emitting devices [2][3][4][5]. ZnO nanorods arrays for such applications are prepared by diverse methods such as sol-gel, sputtering, chemical vapor deposition (CVD), aqueous synthesis and spray pyrolysis [1][2][6][7]. For higher-quality ZnO epitaxial layers forming heterostructures in optoelectronic devices, there are more sophisticated growth methods been developed, such as metalorganic chemical vapor deposition (MOCVD) or laser-assisted molecular beam epitaxy (L-MBE), etc.…”