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Growth of single crystal ZnO nanorods on GaN using an aqueous solution method
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM images of the ZnO nanorods on GaN: (a) top view with a 30° inclination from the surface normal and (b) cross-sectional view. The average ZnO nanorod diameter is with rod length of .

Image of FIG. 2.
FIG. 2.

XRD patterns of ZnO nanorods on GaN (solid line). The pattern is typical for wurtzite hexagonal structure like bulk ZnO with unit cell constant of and . The ZnO nanorods exhibit preferential orientation in the [0002] direction, consistent with the growth along the axis. The XRD pattern of GaN sample without ZnO growth was also shown (dotted line).

Image of FIG. 3.
FIG. 3.

Room temperature microphotoluminescence (PL) spectrum obtained from as-grown ZnO nanorods (solid line). The PL spectrum of the GaN sample without ZnO growth (dotted line) was also displayed for comparison. The He–Cd laser line was used as a source of excitation.

Image of FIG. 4.
FIG. 4.

High resolution transmission electron microscopy (HRTEM) image obtained from the edge of an individual single crystal ZnO nanorod and its corresponding electron diffraction (ED) pattern (inset).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Growth of single crystal ZnO nanorods on GaN using an aqueous solution method