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Effects of nanowire coalescence on their structural and optical properties on a local scale
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View: Figures


Image of FIG. 1.
FIG. 1.

TEM overview of two coalesced NWs. The black arrows indicate the location of SFs. The white box indicates the location of boundary dislocations just above the contact point. The inset reveals a Fourier-filtered enhancement showing only the lattice planes to emphasize the edge character of the boundary dislocations.

Image of FIG. 2.
FIG. 2.

HRTEM image of a basal-plane SF as marked in Fig. 1. The SF is of -type and starts on the Aa layer (…ABABACACAC…).

Image of FIG. 3.
FIG. 3.

CL spectra recorded at 6 K and excited at the bottom, center, and top of one freestanding coalesced NW. The SEM image in the inset shows the corresponding regions that were analyzed for the CL measurements.

Image of FIG. 4.
FIG. 4.

(a) SEM image, [(b)–(d)] SEM and superimposed monochromatic CL images of the same freestanding coalesced NW as shown in Fig. 3. For (b), (c), and (d), the CL detection energy was chosen to be 3.28 eV (ZPL), 3.42 eV , and 3.47 eV , respectively. The white circle in (a) indicates the contact point between the two freestanding coalesced NWs.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of nanowire coalescence on their structural and optical properties on a local scale