Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence

Aditya Prabaswara; David J. Stowe; Bilal Janjua; Tien Khee Ng; Dalaver H. Anjum; Paolo Longo; Chao Zhao; Rami T. Elafandy; Xiaohang Li; Ahmed Y. Alyamani; Munir M. El-Desouki; Boon S. Ooi

doi:10.1117/1.JNP.11.026015

Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence

Aditya Prabaswara, David J. Stowe, Bilal Janjua, Tien Khee Ng, Dalaver H. Anjum, Paolo Longo, Chao Zhao, Rami T. Elafandy, Xiaohang Li, Ahmed Y. Alyamani, Munir M. El-Desouki, Boon S. Ooi

Physics

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

3 Scopus citations

Abstract

We report on the study and characterization of nanoclusters-related recombination centers within quantum-disks-in-nanowires heterostructure by utilizing microphotoluminescence (μ-PL) and cathodoluminescence scanning transmission electron microscopy (CL-STEM). μ-PL measurement shows that the nanoclusters-related recombination center exhibits different temperature-dependent characteristics compared with the surrounding InGaN quantum-disksrelated recombination center. CL-STEM measurements reveal that these recombination centers mainly arise from irregularities within the quantum disks, with a strong, spatially localized emission when measured at low temperature. The spectra obtained from both CL-STEM and μ-PL correlate well with each other. Our work sheds light on the optical and structural properties of simultaneously coexisting recombination centers within nanowires heterostructures.

Original language	British English
Article number	026015
Journal	Journal of Nanophotonics
Volume	11
Issue number	2
DOIs	https://doi.org/10.1117/1.JNP.11.026015
State	Published - 1 Apr 2017

Keywords

Cathodoluminescence
GaN
Nanowires
Photoluminescence

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10.1117/1.JNP.11.026015

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Prabaswara, A., Stowe, D. J., Janjua, B., Ng, T. K., Anjum, D. H., Longo, P., Zhao, C., Elafandy, R. T., Li, X., Alyamani, A. Y., El-Desouki, M. M., & Ooi, B. S. (2017). Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence. Journal of Nanophotonics, 11(2), Article 026015. https://doi.org/10.1117/1.JNP.11.026015

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title = "Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence",

abstract = "We report on the study and characterization of nanoclusters-related recombination centers within quantum-disks-in-nanowires heterostructure by utilizing microphotoluminescence (μ-PL) and cathodoluminescence scanning transmission electron microscopy (CL-STEM). μ-PL measurement shows that the nanoclusters-related recombination center exhibits different temperature-dependent characteristics compared with the surrounding InGaN quantum-disksrelated recombination center. CL-STEM measurements reveal that these recombination centers mainly arise from irregularities within the quantum disks, with a strong, spatially localized emission when measured at low temperature. The spectra obtained from both CL-STEM and μ-PL correlate well with each other. Our work sheds light on the optical and structural properties of simultaneously coexisting recombination centers within nanowires heterostructures.",

keywords = "Cathodoluminescence, GaN, Nanowires, Photoluminescence",

author = "Aditya Prabaswara and Stowe, {David J.} and Bilal Janjua and Ng, {Tien Khee} and Anjum, {Dalaver H.} and Paolo Longo and Chao Zhao and Elafandy, {Rami T.} and Xiaohang Li and Alyamani, {Ahmed Y.} and El-Desouki, {Munir M.} and Ooi, {Boon S.}",

note = "Publisher Copyright: {\textcopyright} The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its.",

year = "2017",

month = apr,

day = "1",

doi = "10.1117/1.JNP.11.026015",

language = "British English",

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Prabaswara, A, Stowe, DJ, Janjua, B, Ng, TK, Anjum, DH, Longo, P, Zhao, C, Elafandy, RT, Li, X, Alyamani, AY, El-Desouki, MM & Ooi, BS 2017, 'Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence', Journal of Nanophotonics, vol. 11, no. 2, 026015. https://doi.org/10.1117/1.JNP.11.026015

TY - JOUR

T1 - Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence

AU - Prabaswara, Aditya

AU - Stowe, David J.

AU - Janjua, Bilal

AU - Ng, Tien Khee

AU - Anjum, Dalaver H.

AU - Longo, Paolo

AU - Zhao, Chao

AU - Elafandy, Rami T.

AU - Li, Xiaohang

AU - Alyamani, Ahmed Y.

AU - El-Desouki, Munir M.

AU - Ooi, Boon S.

N1 - Publisher Copyright: © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - We report on the study and characterization of nanoclusters-related recombination centers within quantum-disks-in-nanowires heterostructure by utilizing microphotoluminescence (μ-PL) and cathodoluminescence scanning transmission electron microscopy (CL-STEM). μ-PL measurement shows that the nanoclusters-related recombination center exhibits different temperature-dependent characteristics compared with the surrounding InGaN quantum-disksrelated recombination center. CL-STEM measurements reveal that these recombination centers mainly arise from irregularities within the quantum disks, with a strong, spatially localized emission when measured at low temperature. The spectra obtained from both CL-STEM and μ-PL correlate well with each other. Our work sheds light on the optical and structural properties of simultaneously coexisting recombination centers within nanowires heterostructures.

AB - We report on the study and characterization of nanoclusters-related recombination centers within quantum-disks-in-nanowires heterostructure by utilizing microphotoluminescence (μ-PL) and cathodoluminescence scanning transmission electron microscopy (CL-STEM). μ-PL measurement shows that the nanoclusters-related recombination center exhibits different temperature-dependent characteristics compared with the surrounding InGaN quantum-disksrelated recombination center. CL-STEM measurements reveal that these recombination centers mainly arise from irregularities within the quantum disks, with a strong, spatially localized emission when measured at low temperature. The spectra obtained from both CL-STEM and μ-PL correlate well with each other. Our work sheds light on the optical and structural properties of simultaneously coexisting recombination centers within nanowires heterostructures.

KW - Cathodoluminescence

KW - GaN

KW - Nanowires

KW - Photoluminescence

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U2 - 10.1117/1.JNP.11.026015

DO - 10.1117/1.JNP.11.026015

M3 - Article

AN - SCOPUS:85021731197

SN - 1934-2608

VL - 11

JO - Journal of Nanophotonics

JF - Journal of Nanophotonics

IS - 2

M1 - 026015

ER -

Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence

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