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

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    JNP_11_2_026015.pdf
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    Type
    Article
    Authors
    Prabaswara, Aditya cc
    Stowe, David J.
    Janjua, Bilal cc
    Ng, Tien Khee cc
    Anjum, Dalaver H. cc
    Longo, Paolo
    Zhao, Chao cc
    Elafandy, Rami T. cc
    Li, Xiaohang cc
    Alyamani, Ahmed Y.
    El-Desouki, Munir M.
    Ooi, Boon S. cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Electron Microscopy
    Imaging and Characterization Core Lab
    Date
    2017-06-30
    Permanent link to this record
    http://hdl.handle.net/10754/625320
    
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    Abstract
    We report on the study and characterization of nanoclusters-related recombination centers within quantum-disks-in-nanowires heterostructure by utilizing microphotoluminescence (mu-PL) and cathodoluminescence scanning transmission electron microscopy (CL-STEM). mu-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 mu-PL correlate well with each other. Our work sheds light on the optical and structural properties of simultaneously coexisting recombination centers within nanowires heterostructures. (C) 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 DOI.
    Citation
    Prabaswara A, Stowe DJ, Janjua B, Ng TK, Anjum DH, et al. (2017) Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence. Journal of Nanophotonics 11: 026015. Available: http://dx.doi.org/10.1117/1.JNP.11.026015.
    Sponsors
    We acknowledge the financial support from King Abdulaziz City for Science and Technology (KACST), Grant No. KACST TIC R2-FP-008. This publication is also based on work supported by the King Abdullah University of Science and Technology (KAUST) baseline funding BAS/1/1614-01-01. The authors also acknowledge Experimental Technique Centre of Brunel University London for granting us access to the CL measurement facility.
    Publisher
    SPIE-Intl Soc Optical Eng
    Journal
    Journal of Nanophotonics
    DOI
    10.1117/1.JNP.11.026015
    Additional Links
    http://nanophotonics.spiedigitallibrary.org/article.aspx?articleid=2643091
    ae974a485f413a2113503eed53cd6c53
    10.1117/1.JNP.11.026015
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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