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Ultraviolet Raman scattering of GaN nanocrystallites: Intrinsic versus collective phenomena
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10.1063/1.1834725
/content/aip/journal/jap/97/2/10.1063/1.1834725
http://aip.metastore.ingenta.com/content/aip/journal/jap/97/2/10.1063/1.1834725
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The SEM micrographs of the GaN nanocrystallites: (a) nanorods, (b) platelets, and (c) segmented rods.

Image of FIG. 2.
FIG. 2.

The Raman spectra of the nanocrystallites. The inset to the figure is the Raman spectrum of GaN thin film. The film exhibits a very strong PL in the same spectral range as the Raman and was subtracted from it; the noise level is an artifact of the subtraction.

Image of FIG. 3.
FIG. 3.

The Raman spectra of the mode and the Lorentzian and Gaussian fit for the (a) nanorods, and (b) the thin film.

Image of FIG. 4.
FIG. 4.

The photoluminescence of the GaN nanorods as a function of laser power for (a) a small ensembler, and (b) a large ensemble.

Image of FIG. 5.
FIG. 5.

The Raman spectra of the mode of a large ensemble for two settings of laser power.

Image of FIG. 6.
FIG. 6.

The behavior of the mode as a function of the laser power for (a) a small ensemble, and (b) a large ensemble. The inset to (b) is the second order behavior of the frequency as a function of the laser power.

Image of FIG. 7.
FIG. 7.

The Raman spectra of the of the small ensemble GaN nanorods for three settings of temperature: 323, 423, and .

Image of FIG. 8.
FIG. 8.

The mode temperature dependence of the small ensemble.

Image of FIG. 9.
FIG. 9.

The Raman spectra of the of the large ensemble GaN nanorods for three settings of temperature: 323, 423, and .

Image of FIG. 10.
FIG. 10.

The mode temperature dependence of the large ensemble.

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/content/aip/journal/jap/97/2/10.1063/1.1834725
2004-12-23
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultraviolet Raman scattering of GaN nanocrystallites: Intrinsic versus collective phenomena
http://aip.metastore.ingenta.com/content/aip/journal/jap/97/2/10.1063/1.1834725
10.1063/1.1834725
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