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A. Cantarero, A. Cros, N. Garro, M.I. Gómez-Gómez, A. García, M.M. de Lima, B. Daudin, A. Rizzi, C. Denker and J. Malindretos Optical properties of nitride nanostructures Annalen der Physik 523

Article first published online: 2 NOV 2010 | DOI: 10.1002/andp.201000107

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In this paper some recent results on the optical properties of nitride nanostructures are reviewed, in particular on GaN quantum dots (QDs) and InN nanocolumns (NCs). First, a brief introduction on the particularities of vibrational modes of wurtzite is given. The GaN QDs, embedded in AlN, were grown by molecular beam epitaxy (MBE) in the Stransky-Krastanov mode on c- and a-plane 6H-SiC. The authors have studied the optical properties by means of photoluminescence (PL) and performed Raman scattering measurements to analyze the strain relaxation in the dots and the barrier, the effect of the internal electric fields, and the influence of specific growth parameters, like the influence of capping or the spacer on the relaxation of the QDs. A theoretical model, …

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