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Journal of Nanophotonics • Open Access • new

Spatially resolved investigation of competing nanocluster emission in quantum-disks-in-nanowires structure characterized by nanoscale cathodoluminescence
Author(s): Aditya Prabaswara; David J. Stowe; Bilal Janjua; Tien Khee Ng; Dalaver H. Anjum; Paolo Longo; Chao Zhao; Rami T. El Afandy; Xiaohang Li; Ahmed Y. Alyamani; Munir M. El-Desouki; Boon S. Ooi

Paper 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-disks-related 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.

Paper Details

Date Published: 30 June 2017
PDF: 12 pages
J. Nanophoton. 11(2) 026015 doi: 10.1117/1.JNP.11.026015
Published in: Journal of Nanophotonics Volume 11, Issue 2
Show Author Affiliations
Aditya Prabaswara, King Abdullah Univ. of Science and Technology (Saudi Arabia)
David J. Stowe, Gatan UK (United Kingdom)
Bilal Janjua, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Tien Khee Ng, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Dalaver H. Anjum, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Paolo Longo, Gatan, Inc. (United States)
Chao Zhao, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Rami T. El Afandy, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Xiaohang Li, King Abdullah Univ. of Science and Technology (Saudi Arabia)
Ahmed Y. Alyamani, King Abdulaziz City for Science and Technology (Saudi Arabia)
Munir M. El-Desouki, King Abdulaziz City for Science and Technology (Saudi Arabia)
Boon S. Ooi, King Abdullah Univ. of Science and Technology (Saudi Arabia)


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