Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes

Melodie Fickenscher; Teng Shi; Howard E Jackson; Leigh Smith; Jan M Yarrison-Rice; Changlin Zheng; Peter Robert Miller; Joanne Etheridge; Bryan M Wong; Qiang Gao; Shriniwas Deshpande; Hark Hoe Tan; Chennupati Jagadish

doi:10.1021/nl304182j

Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes

Melodie Fickenscher, Teng Shi, Howard E Jackson, Leigh Smith, Jan M Yarrison-Rice, Changlin Zheng, Peter Robert Miller, Joanne Etheridge, Bryan M Wong, Qiang Gao, Shriniwas Deshpande, Hark Hoe Tan, Chennupati Jagadish

Monash Centre for Electron Microscopy

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

106 Citations (Scopus)

Abstract

The electronic properties of thin, nanometer scale GaAs quantum well tubes embedded inside the AlGaAs shell of a GaAs core-multishell nanowire are investigated using optical spectroscopies. Using numerical simulations to model cylindrically and hexagonally symmetric systems, we correlate these electronic properties with structural characterization by aberration-corrected scanning transmission electron microscopy of nanowire cross sections. These tubular quantum wells exhibit extremely high quantum efficiency and intense emission for extremely low submicrowatt excitation powers in both photoluminescence and photoluminescence excitation measurements. Numerical calculations of the confined eigenstates suggest that the electrons and holes in their ground states are confined to extremely localized one-dimensional filaments at the corners of the hexagonal structure which extend along the length of the nanowire.

Original language	English
Pages (from-to)	1016 - 1022
Number of pages	7
Journal	Nano Letters
Volume	13
Issue number	3
DOIs	https://doi.org/10.1021/nl304182j
Publication status	Published - 2013

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10.1021/nl304182j

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title = "Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes",

abstract = "The electronic properties of thin, nanometer scale GaAs quantum well tubes embedded inside the AlGaAs shell of a GaAs core-multishell nanowire are investigated using optical spectroscopies. Using numerical simulations to model cylindrically and hexagonally symmetric systems, we correlate these electronic properties with structural characterization by aberration-corrected scanning transmission electron microscopy of nanowire cross sections. These tubular quantum wells exhibit extremely high quantum efficiency and intense emission for extremely low submicrowatt excitation powers in both photoluminescence and photoluminescence excitation measurements. Numerical calculations of the confined eigenstates suggest that the electrons and holes in their ground states are confined to extremely localized one-dimensional filaments at the corners of the hexagonal structure which extend along the length of the nanowire.",

author = "Melodie Fickenscher and Teng Shi and Jackson, {Howard E} and Leigh Smith and Yarrison-Rice, {Jan M} and Changlin Zheng and Miller, {Peter Robert} and Joanne Etheridge and Wong, {Bryan M} and Qiang Gao and Shriniwas Deshpande and Tan, {Hark Hoe} and Chennupati Jagadish",

year = "2013",

doi = "10.1021/nl304182j",

language = "English",

volume = "13",

pages = "1016 -- 1022",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "3",

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TY - JOUR

T1 - Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes

AU - Fickenscher, Melodie

AU - Shi, Teng

AU - Jackson, Howard E

AU - Smith, Leigh

AU - Yarrison-Rice, Jan M

AU - Zheng, Changlin

AU - Miller, Peter Robert

AU - Etheridge, Joanne

AU - Wong, Bryan M

AU - Gao, Qiang

AU - Deshpande, Shriniwas

AU - Tan, Hark Hoe

AU - Jagadish, Chennupati

PY - 2013

Y1 - 2013

N2 - The electronic properties of thin, nanometer scale GaAs quantum well tubes embedded inside the AlGaAs shell of a GaAs core-multishell nanowire are investigated using optical spectroscopies. Using numerical simulations to model cylindrically and hexagonally symmetric systems, we correlate these electronic properties with structural characterization by aberration-corrected scanning transmission electron microscopy of nanowire cross sections. These tubular quantum wells exhibit extremely high quantum efficiency and intense emission for extremely low submicrowatt excitation powers in both photoluminescence and photoluminescence excitation measurements. Numerical calculations of the confined eigenstates suggest that the electrons and holes in their ground states are confined to extremely localized one-dimensional filaments at the corners of the hexagonal structure which extend along the length of the nanowire.

AB - The electronic properties of thin, nanometer scale GaAs quantum well tubes embedded inside the AlGaAs shell of a GaAs core-multishell nanowire are investigated using optical spectroscopies. Using numerical simulations to model cylindrically and hexagonally symmetric systems, we correlate these electronic properties with structural characterization by aberration-corrected scanning transmission electron microscopy of nanowire cross sections. These tubular quantum wells exhibit extremely high quantum efficiency and intense emission for extremely low submicrowatt excitation powers in both photoluminescence and photoluminescence excitation measurements. Numerical calculations of the confined eigenstates suggest that the electrons and holes in their ground states are confined to extremely localized one-dimensional filaments at the corners of the hexagonal structure which extend along the length of the nanowire.

UR - http://pubs.acs.org/doi/pdf/10.1021/nl304182j

U2 - 10.1021/nl304182j

DO - 10.1021/nl304182j

M3 - Article

SN - 1530-6984

VL - 13

SP - 1016

EP - 1022

JO - Nano Letters

JF - Nano Letters

IS - 3

ER -

Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes

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Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes

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