Structural and optical properties of N-doped ZnO nanorod arrays prepared using sol-gel immersion method

Nitrogen (N)-doped zinc oxide (ZnO) nanorod arrays were synthesized on aluminium (Al)-doped ZnO seed layer catalyst using sol-gel immersion method. The XRD analysis showed that the increment in crystallite sizes and lattice parameters while the strain/stress of the films reduced when the concentration increased. The FESEM image revealed that the nanorods exhibit hexagonal shape. The average diameters of nanorods have increased from 150 nm (undoped) to 230 nm (3 at.%). The N-doped ZnO nanorod arrays also displayed good transmittance properties at visible region.