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Defect-free ZnSe nanowire and nanoneedle nanostructures
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View: Figures


Image of FIG. 1.
FIG. 1.

Data obtained from NWs grown at . (a) SEM image of the as-grown sample at the border of the gold-coated region. The right side shows the dense carpet of NWs. On the left, individual NWs reach into the uncoated zone. (b) TEM image of a single NW. The arrows indicate wurtzite and Zn-blende zones.

Image of FIG. 2.
FIG. 2.

Data obtained from nanoneedles grown at at Se excess. (a) SEM of the as-grown sample. (b) TEM image of a single nanoneedle. The inset shows a zoom of the region around the tip.

Image of FIG. 3.
FIG. 3.

PL spectra from the different samples: (a) NW sample from Fig. 1, (b) nanoneedle sample from Fig. 2, and [(c) and (d)] combined NW/nanoneedle sample from Fig. 4. The inset of (d) is a zoom into the region of 460–500 nm.

Image of FIG. 4.
FIG. 4.

Data obtained from combined growth of NWs on nanoneedle tips. (a) SEM image of the as-grown NW/nanoneedle sample. (b) SEM of an isolated NW that broke off behind the thicker base. (c) TEM image of two close-by NWs.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Defect-free ZnSe nanowire and nanoneedle nanostructures