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Synthesis and analysis of abnormal wurtzite ZnSe nanowheels
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM images and EDX spectrum of the as-synthesized sample grown at the source temperature of for . (a) Low resolution SEM image showing the nanowheels. (b) High magnification SEM image of a typical nanowheel. (c) Enlarged image of the as-grown nanowheels with obvious interfaces between the base and the toothlike parts. (d) EDX spectrum of a nanowheel.

Image of FIG. 2.
FIG. 2.

(a) TEM image of the wurtzite nanowheel. (b) HRTEM image of the nanowheel showing an obvious interface. (c) FFT pattern corresponding to (b). (d) HRTEM image of the toothlike parts showing the mismatch dislocations and stacking faults.

Image of FIG. 3.
FIG. 3.

(a) SEM image of wurtzite nanowheels grown at a source temperature of for and indicating the two-step growth. (b) Schematic diagram of the as-grown nanowheel. (c) Schematic diagram of the nanoring (Ref. 17) showing the [0001] direction pointing to the center of the circle.

Image of FIG. 4.
FIG. 4.

(a) SEM image, (b) TEM image, (c) the corresponding HRTEM image, and (d) the FFT pattern of the nanowires grown at the source temperature of for . The inset of (a) is the magnified SEM image showing a single zinc blende nanowire near its tip.

Image of FIG. 5.
FIG. 5.

Part of the phase diagram. The solid lines denoted by s define the solid-vapor equilibrium. The dashed lines denoted by m give the equilibrium between the vapor phase and the metastable phase. The arrowheads describe the final product.

Image of FIG. 6.
FIG. 6.

(a) CL spectrum of the nanowheel showing the band transition emission and defect emission peaks. (b) SEM image of a typical nanowheel. (c) CL image of the nanowheel.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Synthesis and analysis of abnormal wurtzite ZnSe nanowheels