In the presented work, the features of the oriented deposition of ZnO tetrapods on the rhombohedral plane of sapphire are studied. According to the scanning electron microscopy data, a ZnO coating is formed on the rhombohedral plane of sapphire, which is an ordered ensemble of rods and hierarchical structures. According to the X-ray diffraction data, the ZnO rods adjacent to the surface of the sapphire substrate are oriented in accordance with the orientation ratio (110) ZnOǁ (1 1 2) sapphire. In the ordered ensemble of ZnO structures, an optical transmittance in the visible region of the spectrum of 30–35% is achieved. The band gap of the ordered ensemble of ZnO structures is determined to be 3. 18 eV. It is demonstrated that under pulsed excitation, a significant proportion of the intensity is made up of the fast ultraviolet component of luminescence with a decay time of about 0. 7–0. 8 ns.
Krasnova et al. (Mon,) studied this question.