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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
; ; ; ; ; ; ; and
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 (ACS)
external identifiers
  • wos:000352750200038
  • scopus:84926671074
  • pmid:25714126
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
2016-04-01 14:02:19
date last changed
2023-11-13 01:32:55
@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}},
  keywords     = {{Nanowire; core-shell; wurtzite; X-ray diffraction; InP; InGaAs}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{2462--2467}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Nano Letters}},
  title        = {{Structural Properties of Wurtzite InP-InGaAs Nanowire Core-Shell Heterostructures}},
  url          = {{http://dx.doi.org/10.1021/nl5049127}},
  doi          = {{10.1021/nl5049127}},
  volume       = {{15}},
  year         = {{2015}},
}