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

Research output: Contribution to journalArticleResearchpeer-review

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 languageEnglish
Pages (from-to)1016 - 1022
Number of pages7
JournalNano Letters
Volume13
Issue number3
DOIs
Publication statusPublished - 2013

Cite this

Fickenscher, M., Shi, T., Jackson, H. E., Smith, L., Yarrison-Rice, J. M., Zheng, C., ... Jagadish, C. (2013). Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes. Nano Letters, 13(3), 1016 - 1022. https://doi.org/10.1021/nl304182j
Fickenscher, Melodie ; Shi, Teng ; Jackson, Howard E ; Smith, Leigh ; Yarrison-Rice, Jan M ; Zheng, Changlin ; Miller, Peter Robert ; Etheridge, Joanne ; Wong, Bryan M ; Gao, Qiang ; Deshpande, Shriniwas ; Tan, Hark Hoe ; Jagadish, Chennupati. / Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes. In: Nano Letters. 2013 ; Vol. 13, No. 3. pp. 1016 - 1022.
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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",
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pages = "1016 -- 1022",
journal = "Nano Letters",
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Fickenscher, M, Shi, T, Jackson, HE, Smith, L, Yarrison-Rice, JM, Zheng, C, Miller, PR, Etheridge, J, Wong, BM, Gao, Q, Deshpande, S, Tan, HH & Jagadish, C 2013, 'Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes' Nano Letters, vol. 13, no. 3, pp. 1016 - 1022. https://doi.org/10.1021/nl304182j

Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes. / Fickenscher, Melodie; Shi, Teng; Jackson, Howard E; Smith, Leigh; Yarrison-Rice, Jan M; Zheng, Changlin; Miller, Peter Robert; Etheridge, Joanne; Wong, Bryan M; Gao, Qiang; Deshpande, Shriniwas; Tan, Hark Hoe; Jagadish, Chennupati.

In: Nano Letters, Vol. 13, No. 3, 2013, p. 1016 - 1022.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Fickenscher, Melodie

AU - Shi, Teng

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AU - Smith, Leigh

AU - Yarrison-Rice, Jan M

AU - Zheng, Changlin

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AU - Gao, Qiang

AU - Deshpande, Shriniwas

AU - Tan, Hark Hoe

AU - Jagadish, Chennupati

PY - 2013

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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.

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Fickenscher M, Shi T, Jackson HE, Smith L, Yarrison-Rice JM, Zheng C et al. Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes. Nano Letters. 2013;13(3):1016 - 1022. https://doi.org/10.1021/nl304182j