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Exciton States in InGaAsP/InP Core-Shell Quantum Dots under Magnetic Field.

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Title: Exciton States in InGaAsP/InP Core-Shell Quantum Dots under Magnetic Field.
Authors: Hu, Min1 (AUTHOR) humin.0219@163.com, Yao, HongYan2 (AUTHOR)
Source: Semiconductors. Apr2026, Vol. 60 Issue 4, p443-450. 8p.
Subject Terms: *Magnetic field effects, *Quantum confinement effects, *Exciton theory, *Quantum dots, *Physical constants, *Variational approach (Mathematics), *Optoelectronic devices
Abstract: This study uses the variational method to investigate the ground-state exciton binding energy and Bohr radius in InGaAsP/InP core-shell quantum dots, considering variations in core radius, shell radius, magnetic field strength, and material composition. The results reveal that the exciton binding energy and Bohr radius are highly sensitive to quantum confinement, magnetic fields, and material composition. Specifically, the exciton binding energy exhibits a non-monotonic dependence on the core and shell radii as the confinement potential evolves. The application of a magnetic field enhances the exciton binding energy by contracting the wave functions of electrons and holes, thereby strengthening Coulomb interactions. Additionally, variations in the Ga and As components significantly influence the exciton binding energy due to accompanying changes in the bandgap and effective masses. These findings provide valuable insights into the tunability of exciton properties in core-shell quantum dot, which is crucial for optimizing their performance in optoelectronic devices. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 192963041
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Exciton States in InGaAsP/InP Core-Shell Quantum Dots under Magnetic Field.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Hu%2C+Min%22">Hu, Min</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> humin.0219@163.com</i><br /><searchLink fieldCode="AR" term="%22Yao%2C+HongYan%22">Yao, HongYan</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Semiconductors%22">Semiconductors</searchLink>. Apr2026, Vol. 60 Issue 4, p443-450. 8p.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Magnetic+field+effects%22">Magnetic field effects</searchLink><br />*<searchLink fieldCode="DE" term="%22Quantum+confinement+effects%22">Quantum confinement effects</searchLink><br />*<searchLink fieldCode="DE" term="%22Exciton+theory%22">Exciton theory</searchLink><br />*<searchLink fieldCode="DE" term="%22Quantum+dots%22">Quantum dots</searchLink><br />*<searchLink fieldCode="DE" term="%22Physical+constants%22">Physical constants</searchLink><br />*<searchLink fieldCode="DE" term="%22Variational+approach+%28Mathematics%29%22">Variational approach (Mathematics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Optoelectronic+devices%22">Optoelectronic devices</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study uses the variational method to investigate the ground-state exciton binding energy and Bohr radius in InGaAsP/InP core-shell quantum dots, considering variations in core radius, shell radius, magnetic field strength, and material composition. The results reveal that the exciton binding energy and Bohr radius are highly sensitive to quantum confinement, magnetic fields, and material composition. Specifically, the exciton binding energy exhibits a non-monotonic dependence on the core and shell radii as the confinement potential evolves. The application of a magnetic field enhances the exciton binding energy by contracting the wave functions of electrons and holes, thereby strengthening Coulomb interactions. Additionally, variations in the Ga and As components significantly influence the exciton binding energy due to accompanying changes in the bandgap and effective masses. These findings provide valuable insights into the tunability of exciton properties in core-shell quantum dot, which is crucial for optimizing their performance in optoelectronic devices. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1134/S1063782625603838
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 8
        StartPage: 443
    Subjects:
      – SubjectFull: Magnetic field effects
        Type: general
      – SubjectFull: Quantum confinement effects
        Type: general
      – SubjectFull: Exciton theory
        Type: general
      – SubjectFull: Quantum dots
        Type: general
      – SubjectFull: Physical constants
        Type: general
      – SubjectFull: Variational approach (Mathematics)
        Type: general
      – SubjectFull: Optoelectronic devices
        Type: general
    Titles:
      – TitleFull: Exciton States in InGaAsP/InP Core-Shell Quantum Dots under Magnetic Field.
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          Name:
            NameFull: Hu, Min
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          Name:
            NameFull: Yao, HongYan
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 60
            – Type: issue
              Value: 4
          Titles:
            – TitleFull: Semiconductors
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