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(a) SEM image of InN NCs grown on -plane GaN, showing faceted - and -plane topsides. The inset shows the -plane base rectangular geometry. (b) SEM image of the InN NCs grown directly on -plane GaN templates.
(a) SAED pattern taken along the zone axis revealing two different diffraction patterns corresponding to the GaN template (circles) and the InN NCs (squares), respectively. (b) Cross-sectional HRTEM image revealing an atomically flat and abrupt interface between the InN NCs and the -plane GaN template. A lower magnification TEM image of the NCs is shown in the inset. No InN compact epilayer is formed between the GaN template and the NCs.
mode intensity variation as a function of the polarization angle. The dots represent the InN NCs grown along the axis, the squares correspond to the InN NCs grown on -plane GaN templates and the stars to the -plane GaN template.
PL spectra of InN nanocolumns grown on -plane GaN templates as a function of temperature.
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