Direct Measure of Strain and Electronic Structure in GaAs/GaP Core—Shell Nanowires

Mohammad Montazeri; Melodie Fickenscher; JIN Zou; Mats-Erik Pistol; Craig E Pryor; Leigh M Smith; Howard E Jackson; Jan YARRISON-RICE; JUNG HYUN Kang; QIANG Gao; H Hoe Tan; Chennupati Jagadish; YANAN Guo

doi:10.1021/nl903547r

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Direct Measure of Strain and Electronic Structure in GaAs/GaP Core—Shell Nanowires

Journal article

Peer reviewed

Direct Measure of Strain and Electronic Structure in GaAs/GaP Core—Shell Nanowires

Mohammad Montazeri, Melodie Fickenscher, JIN Zou, Mats-Erik Pistol, Craig E Pryor, Leigh M Smith, Howard E Jackson, Jan YARRISON-RICE, JUNG HYUN Kang, QIANG Gao, …

Nano letters, Vol.10(3), pp.880-886

2010

DOI: 10.1021/nl903547r

PMID: 20131863

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https://openresearch-repository.anu.edu.au/bitstreams/e746905f-5670-4596-bd7d-b76d6d8122fb/downloadView

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Abstract

Highly strained GaAs/GaP nanowires of excellent optical quality were grown with 50 nm diameter GaAs cores and 25 nm GaP shells. Photoluminescence from these nanowires is observed at energies dramatically shifted from the unstrained GaAs free exciton emission energy by 260 meV. Using Raman scattering, we show that it is possible to separately measure the degree of compressive and shear strain of the GaAs core and show that the Raman response of the GaP shell is consistent with tensile strain. The Raman and photoluminescence measurement are both on good agreement with 8 band k.p calculations. This result opens up new possibilities for engineering the electronic properties of the nanowires for optimal design of one-dimensional nanodevices by controlling the strain of the core and shell by varying the nanowire geometry.

Materials Science

Physics

Condensed matter: electronic structure, electrical, magnetic, and optical properties

Cross-disciplinary physics: materials science; rheology

Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures

Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals

Exact sciences and technology

Nanocrystalline materials

Nanoscale materials and structures: fabrication and characterization

Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation

Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures

Quantum wires

Details

Title: Subtitle: Direct Measure of Strain and Electronic Structure in GaAs/GaP Core—Shell Nanowires
Creators: Mohammad Montazeri - University of Cincinnati
Melodie Fickenscher - University of Cincinnati
JIN Zou - The University of Queensland
Mats-Erik Pistol - Lund University
Craig E Pryor - University of Iowa
Leigh M Smith - University of Cincinnati
Howard E Jackson - University of Cincinnati
Jan YARRISON-RICE - Miami University
JUNG HYUN Kang - Australian National University
QIANG Gao - Australian National University
H Hoe Tan - Australian National University
Chennupati Jagadish - Australian National University
YANAN Guo - The University of Queensland
Resource Type: Journal article
Publication Details: Nano letters, Vol.10(3), pp.880-886
DOI: 10.1021/nl903547r
PMID: 20131863
NLM abbreviation: Nano Lett
ISSN: 1530-6984
eISSN: 1530-6992
Publisher: American Chemical Society
Language: English
Date published: 2010
Academic Unit: Physics and Astronomy
Record Identifier: 9984200051002771

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