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Structural Properties of Wurtzite InP-InGaAs Nanowire Core-Shell Heterostructures

Heurlin, Magnus LU ; Stankevic, Tomas; Mickevicius, Simas; Yngman, Sofie LU ; Lindgren, David LU ; Mikkelsen, Anders LU ; Feidenhans'l, Robert; Borgström, Magnus LU and Samuelson, Lars LU (2015) In Nano Letters 15(4). p.2462-2467
Abstract
We report on growth and characterization of wurtzite InP-In1-xGaxAs core-shell nanowire heterostructures. A range of nanowire structures with different Ga concentration in the shell was characterized with transmission electron microscopy and X-ray diffraction. We found that the main part of the nanowires has a pure wurtzite crystal structure, with occasional stacking faults occurring only at the top and bottom. This allowed us to determine the structural properties of wurtzite In1-xGaxAs. The InP-In1-xGaxAs core-shell nanowires show a triangular and hexagonal facet structure of {1100} and {10 (10) over bar} planes. X-ray diffraction measurements showed that the core and the shell are pseudomorphic along the c-axis, and the strained axial... (More)
We report on growth and characterization of wurtzite InP-In1-xGaxAs core-shell nanowire heterostructures. A range of nanowire structures with different Ga concentration in the shell was characterized with transmission electron microscopy and X-ray diffraction. We found that the main part of the nanowires has a pure wurtzite crystal structure, with occasional stacking faults occurring only at the top and bottom. This allowed us to determine the structural properties of wurtzite In1-xGaxAs. The InP-In1-xGaxAs core-shell nanowires show a triangular and hexagonal facet structure of {1100} and {10 (10) over bar} planes. X-ray diffraction measurements showed that the core and the shell are pseudomorphic along the c-axis, and the strained axial lattice constant is closer to the relaxed In1-xGaxAs shell. Microphotoluminescence measurements of the nanowires show emission in the infrared regime, which makes them suitable for applications in optical communication. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nanowire, core-shell, wurtzite, X-ray diffraction, InP, InGaAs
in
Nano Letters
volume
15
issue
4
pages
2462 - 2467
publisher
The American Chemical Society
external identifiers
  • wos:000352750200038
  • scopus:84926671074
ISSN
1530-6992
DOI
10.1021/nl5049127
language
English
LU publication?
yes
id
262ab5b2-7e87-488f-acb0-71ec48b5d1ec (old id 5401706)
date added to LUP
2015-05-19 12:39:50
date last changed
2017-10-08 03:58:04
@article{262ab5b2-7e87-488f-acb0-71ec48b5d1ec,
  abstract     = {We report on growth and characterization of wurtzite InP-In1-xGaxAs core-shell nanowire heterostructures. A range of nanowire structures with different Ga concentration in the shell was characterized with transmission electron microscopy and X-ray diffraction. We found that the main part of the nanowires has a pure wurtzite crystal structure, with occasional stacking faults occurring only at the top and bottom. This allowed us to determine the structural properties of wurtzite In1-xGaxAs. The InP-In1-xGaxAs core-shell nanowires show a triangular and hexagonal facet structure of {1100} and {10 (10) over bar} planes. X-ray diffraction measurements showed that the core and the shell are pseudomorphic along the c-axis, and the strained axial lattice constant is closer to the relaxed In1-xGaxAs shell. Microphotoluminescence measurements of the nanowires show emission in the infrared regime, which makes them suitable for applications in optical communication.},
  author       = {Heurlin, Magnus and Stankevic, Tomas and Mickevicius, Simas and Yngman, Sofie and Lindgren, David and Mikkelsen, Anders and Feidenhans'l, Robert and Borgström, Magnus and Samuelson, Lars},
  issn         = {1530-6992},
  keyword      = {Nanowire,core-shell,wurtzite,X-ray diffraction,InP,InGaAs},
  language     = {eng},
  number       = {4},
  pages        = {2462--2467},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {Structural Properties of Wurtzite InP-InGaAs Nanowire Core-Shell Heterostructures},
  url          = {http://dx.doi.org/10.1021/nl5049127},
  volume       = {15},
  year         = {2015},
}