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. 2013 Mar 6;13(4):1559–1563. doi: 10.1021/nl304723c

Figure 2.

Figure 2

Structural properties of wurtzite GaP nanowires. (a) HRTEM image showing the pure wurtzite crystal structure. The Al0.4Ga0.6P shell lattice matches the core and no defects are nucleated from the interface. The scalebar corresponds to 5 nm. (b) FFT image of the GaP nanowire in (a). (c) HAADF TEM image of a GaP/Al0.4Ga0.6P core/shell wire, showing the uniformity of the shell. The scalebar corresponds to 50 nm. (d) EDX line scan taken perpendicular to the nanowire axis, showing the GaP/Al0.4Ga0.6P core/shell structure. (e) X-ray diffraction intensity along the crystal truncation rod through the (2̅2̅4̅) substrate peak, which includes the (101̅.l̅) wurtzite peaks. The resolution-limited line widths of the WZ peaks and the absence of signal between the peaks show the high quality of the WZ material.