Hexagonal GaN nanorods are synthesized on quartz substrates through ammoniating Ga 2O 3 thin films deposited by radio frequency magnetron sputtering.X ray diffraction (XRD),scanning electron microscopy (SEM),high resolution transmission electron microscopy (HRTEM),and photoluminescence (PL) are used to analyze the synthesized GaN nanorods.Among the products,one dimensional GaN nanostructures owning protuberances on the surface are detected,which show interesting herringbone morphology.The analysis reveals that the herringbone GaN nanorods are polycrystalline composed of overlapping parallelepiped GaN nanocrystals arranged along the major axis.The large blue shift of yellow PL luminescence of the nanorods is observed at room temperature.
