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

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

doi:10.1088/0957-4484/25/21/215705

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

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

Research output: Contribution to journal › Article › peer-review

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. © 2014 IOP Publishing Ltd.

Original language	English
Article number	215705
Journal	Nanotechnology
Volume	25
Issue number	21
DOIs	https://doi.org/10.1088/0957-4484/25/21/215705
Publication status	Published - 30 May 2014

Keywords

core-shell structures
EDX mapping
InGaN nanorods
molecular beam epitaxy
spinodal decomposition
transmission electron microscopy

Access to Document

10.1088/0957-4484/25/21/215705

http://iopscience.iop.org/0957-4484/25/21/215705/pdf/0957-4484_25_21_215705.pdf

Cite this

@article{6c830279386c43a18e807a470e77bdcd,

title = "Compositional variations in In0.5Ga0.5N nanorods grown by molecular beam epitaxy",

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. {\textcopyright} 2014 IOP Publishing Ltd.",

keywords = "core-shell structures, EDX mapping, InGaN nanorods, molecular beam epitaxy, spinodal decomposition, transmission electron microscopy",

author = "Sarah Haigh and D. Cherns and Webster, \{R. F.\} and Novikov, \{S. V.\} and Foxon, \{C. T.\} and Fischer, \{A. M.\} and Ponce, \{F. A.\} and Haigh, \{S. J.\}",

note = "Times Cited: 0",

year = "2014",

month = may,

day = "30",

doi = "10.1088/0957-4484/25/21/215705",

language = "English",

volume = "25",

journal = "Nanotechnology",

issn = "1361-6528",

publisher = "IOP Publishing Ltd",

number = "21",

}

TY - JOUR

T1 - Compositional variations in In0.5Ga0.5N nanorods grown by molecular beam epitaxy

AU - Haigh, Sarah

AU - Cherns, D.

AU - Webster, R. F.

AU - Novikov, S. V.

AU - Foxon, C. T.

AU - Fischer, A. M.

AU - Ponce, F. A.

AU - Haigh, S. J.

N1 - Times Cited: 0

PY - 2014/5/30

Y1 - 2014/5/30

N2 - 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. © 2014 IOP Publishing Ltd.

AB - 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. © 2014 IOP Publishing Ltd.

KW - core-shell structures

KW - EDX mapping

KW - InGaN nanorods

KW - molecular beam epitaxy

KW - spinodal decomposition

KW - transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84899892038

U2 - 10.1088/0957-4484/25/21/215705

DO - 10.1088/0957-4484/25/21/215705

M3 - Article

SN - 1361-6528

VL - 25

JO - Nanotechnology

JF - Nanotechnology

IS - 21

M1 - 215705

ER -

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this