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Excitonic nonlinear optical properties in AlN/GaN spherical core/shell quantum dots under pressure

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Abstract

This work is based on a recent theoretical study of how the hydrostatic pressure and core/shell sizes affect the optical properties associated with the transition from the ground state to first excited state (1s–1p), of an exciton confined in spherical core/shell quantum dots (SCSQDs). We have computed under an effective mass framework, linear, third-order nonlinear, and total absorption coefficients (AC) and refractive index (RI) as functions of photon energy for different sizes of SCSQDs with varying hydrostatic pressure. Our results show that the optical absorption is deeply dependent on the incident light intensity. Both AC and RI significantly influenced by the confinement and pressure effects.

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Authors and Affiliations

  1. Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat, 10100, Morocco

    N. Aghoutane, M. El-Yadri, A. El Aouami & E. Feddi

  2. Department of Physics, Saint John’s University, Jamaica, NY, 11439, USA

    G. Long & M. Sadoqi

  3. LCP-A2MC, Université de Lorraine, 57000, Metz, France

    F. Dujardin

  4. Department of Materials Science and Engineering, Le Quy Don Technical University, Hanoi, 100000, Vietnam

    Chuong V. Nguyen

  5. Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam

    Nguyen N. Hieu

  6. Division of Theoretical Physics, Dong Thap University, Cao Lanh, 870000, Vietnam

    Huynh V. Phuc

Authors
  1. N. Aghoutane
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  2. M. El-Yadri
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  3. A. El Aouami
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  4. E. Feddi
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  5. G. Long
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  6. M. Sadoqi
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  7. F. Dujardin
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  8. Chuong V. Nguyen
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  9. Nguyen N. Hieu
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  10. Huynh V. Phuc
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Corresponding authors

Correspondence to E. Feddi or G. Long.

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Aghoutane, N., El-Yadri, M., El Aouami, A. et al. Excitonic nonlinear optical properties in AlN/GaN spherical core/shell quantum dots under pressure. MRS Communications 9, 663–669 (2019). https://doi.org/10.1557/mrc.2019.43

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