Abstract
In this study, the effects of precursor concentration on the zinc oxide (ZnO) nanorods grown on flexible polyethylen terephthalate (PET) substrate with and without buffer layer were discussed. The concentration was varied from 0.05 to 0.5M. When we inserted buffer layer before hydrothermally growth of ZnO, better aligned ZnO nanorods were grown. At relatively middle concentration (from 0.2 to 0.3M), well-aligned ZnO nanorods were grown on PET substrate with and without buffer layer. The crystal structural properties and surface morphologies were examined by x-ray diffraction (XRD), and field emission scanning electron microscope (FE-SEM), respectively.