Investigation on Properties of ZnO Nanorods Grown at Different Immersion Time on TiO_2 Seed Layer

摘要

TiO_2:ZNR thin films have been fabricated on glass substrates via sol-gel spin-coating technique and solution-immersion method, respectively. Zinc oxide nanorods (ZNR) were grown at low temperature of 90°C for 2,3,4,5 and 6 hours of immersion time on titanium dioxide (TiO_2) seed layer-coated substrate. FESEM images showed that the densest distributions of ZNR with smaller diameter size were observed around 3 and 4 h. The diffraction peaks of (0 0 2)-plane were observed for all thin films, indicating nanorods orientation in the c-axis direction as detected in XRD patterns. UV-Vis absorbance spectra recorded that smaller size of ZNR at 3 and 4 h have maximum intensity of UV absorption properties.