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

Cherns, D.; Webster, R. F.; Novikov, S. V.; Foxon, C. Thomas; Fischer, A. M.; Ponce, F. A.; Haigh, S. J.

Authors

D. Cherns

R. F. Webster

C. Thomas Foxon

A. M. Fischer

F. A. Ponce

S. J. Haigh



Abstract

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.

Journal Article Type Article
Publication Date May 2, 2014
Journal Nanotechnology
Print ISSN 0957-4484
Electronic ISSN 1361-6528
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 25
Issue 21
Article Number 215705
APA6 Citation Cherns, D., Webster, R. F., Novikov, S. V., Foxon, C. T., Fischer, A. M., Ponce, F. A., & Haigh, S. J. (2014). Compositional variations in In0.5Ga0.5N nanorods grown by molecular beam epitaxy. Nanotechnology, 25(21), https://doi.org/10.1088/0957-4484/25/21/215705
DOI https://doi.org/10.1088/0957-4484/25/21/215705
Keywords InGaN nanorods, transmission electron microscopy, molecular beam epitaxy, EDX mapping, core-shell structures, spinodal decomposition
Publisher URL http://iopscience.iop.org/article/10.1088/0957-4484/25/21/215705/meta
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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