as noted above, an increase in the gas flow leads to a decrease both in
the surface temperature (Table 1) and the retention time. Such low retention time and temperature are not sufficient to fully convert ZnCl solution droplets to ZnO. With the highest flowrate under investigation (60 slm), films with rather poor crystallinity are obtained and the component is identified as ZHC. Such an observation supports the hypothesis proposed based on the SEMimage: the sheet-like hexagonal plates is
ZHC.