Compositional variations in In0.5Ga0.5N nanorods grown by molecular beam epitaxy

Cherns, D. and Webster, R. F. and Novikov, S. V. and Foxon, C. Thomas and Fischer, A. M. and Ponce, F. A. and Haigh, S. J. (2014) Compositional variations in In0.5Ga0.5N nanorods grown by molecular beam epitaxy. Nanotechnology, 25 (21). 215705/1-215705/6. ISSN 1361-6528

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The composition of InxGa1 − xN nanorods grown by molecular beam epitaxy with nominal x = 0.5 has been mapped by electron microscopy using Z-contrast imaging and x-ray microanalysis. This shows a coherent and highly strained core-shell structure with a near atomically sharp boundary between a Ga-rich shell (x∼0.3) and an In-rich core (x∼ 0.7), which itself has In- and Ga-rich platelets alternating along the growth axis. It is proposed that the shell and core regions are lateral and vertical growth sectors, with the core structure determined by spinodal decomposition.

Item Type: Article
Keywords: InGaN nanorods, transmission electron microscopy, molecular beam epitaxy, EDX mapping, core-shell structures, spinodal decomposition
Schools/Departments: University of Nottingham UK Campus > Faculty of Science > School of Physics and Astronomy
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Depositing User: Eprints, Support
Date Deposited: 08 Jul 2016 09:24
Last Modified: 14 Sep 2016 01:16

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