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Two-dimensional dendritic nanowires from oxidation of microcrystals
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM image of polyhedral microparticles, which will be used as precursor to form dendritic nanostructures. (Inset) Enlarged view of one particle, showing its flat top face and stepped side faces.

Image of FIG. 2.
FIG. 2.

(a) SEM image of the structure after annealing the microparticles at . (b) Magnified view of dendritic nanostructure on the particle surface. (c) A perspective view of one annealed particle showing that the dendritic branches lie in parallel planes.

Image of FIG. 3.
FIG. 3.

XRD spectra of the precursors (bottom branch) and the annealed sample (upper branch). The open circles denote peaks corresponding to and the closed circles to .

Image of FIG. 4.
FIG. 4.

(a) TEM images of a complex dendritic nanostructure. Inset at top left: corresponding electron diffraction pattern with [0001] transmission direction. Inset at bottom right: a dendrite showing its main arm and branches. HRTEM (0001)-plane lattice images at (b) the joint region, and (c) tip of a branch. The inset is a fast Fourier transformation of the HRTEM image. The white arrows indicate the wire axes, which is along ( axes).

Image of FIG. 5.
FIG. 5.

Room-temperature photoluminescence (solid line) of the dendritic nanowires recorded with a micro-PL system. Dashed lines: fitting result of the broad peak.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-dimensional dendritic ZnO nanowires from oxidation of Zn microcrystals