Crystal growth of ZnO micro and nanostructures by PVT on c-sapphire and amorphous quartz substrates

Synthesis and Characterization of ZnO Nano and Micro Structures Grown by Low Temperature Spray Pyrolysis and Vapor Transport

“…[36]), the evolution of the morphology and the density of ZnO micro and nanostructures as a function of deposition temperature and distance from the source have been studied. In order to analyse the evolution of these morphologies with the time, we have focalised on the effect of deposition time on the density and size of the grown nanostructures on amorphous quartz and c-sapphire substrates.…”

“…In order to analyse the evolution of these morphologies with the time, we have focalised on the effect of deposition time on the density and size of the grown nanostructures on amorphous quartz and c-sapphire substrates. Nevertheless, as early reported, 36 will discuss only the results on the samples grown on c-sapphire substrate. Figure 8 shows the effect of deposition time (1.5 h, 3 h and 6 h) on the morphology of ZnO structures grown on c-sapphire substrates at three deposition zones.…”

“…9(c)) can be indexed as before by a wurtzite structure of ZnO (space group P63mc) [JCPDS: in good agreement with previous measurements. 36 The indexation of SAED pattern indicates that the tail developed from the grain is monocrystalline, growing in the c-axis direction. Figure 9(d) shows the TEM-EDX spectrum of this tail, being the copper and carbon peaks due to the TEM grid.…”