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Systematic study of the emission spectra of nanowire quantum dots

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.1063/5.0045880
AuthorSearch for: 1ORCID identifier: https://orcid.org/0000-0002-1569-387X; Search for: 1; Search for: 2; Search for: 1; Search for: 2; Search for: 1; Search for: ; Search for: ; Search for: ORCID identifier: https://orcid.org/0000-0002-9677-5403; Search for:
Affiliation
  1. National Research Council of Canada. Advanced Electronics and Photonics
  2. National Research Council of Canada. Security and Disruptive Technologies
FormatText, Article
Subjectquasiparticle; emission spectroscopy; excitons; nanowires; crystal structure; photoluminescence; quantum dots; photonic entanglement
Abstract
A systematic study of the emission spectra of single InAsP nanowire quantum dots in position-controlled InP photonic nanowire waveguides is presented. Using excitation power-dependent photoluminescence and correlation measurements, we distinguish between the different excitonic complexes responsible for s-shell emission. From measurements of over 40 nominally identical devices, we obtain a standard deviation of ~5 meV in the emission energy of excitons, biexcitons, and charged exciton photons. The mean biexciton binding energy was 1.9 meV with a standard deviation of ~0.8 meV. The experimental spectra are understood using atomistic multi-million atom theory of neutral and charged multi-exciton complexes implemented in the design tool QNANO.
Publication date
PublisherAmerican Institute of Physics
In
  • Applied Physics Letters 118, no. 16, 161107 (22 April 2021): 1–7.
LanguageEnglish
Peer reviewedYes
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Record identifierd0ef119b-fc58-42aa-9ff1-a4fd42fb652b
Record created2022-01-10
Record modified2022-01-11
Date modified: