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

Published online by Cambridge University Press:  24 April 2019

N. Aghoutane ,
M. El-Yadri ,
A. El Aouami ,
E. Feddi ,
G. Long Open the ORCID record for G. Long [Opens in a new window] ,
M. Sadoqi ,
F. Dujardin ,
Chuong V. Nguyen ,
Nguyen N. Hieu  and
Huynh V. Phuc
N. Aghoutane
Affiliation:
Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat 10100, Morocco
M. El-Yadri
Affiliation:
Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat 10100, Morocco
A. El Aouami
Affiliation:
Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat 10100, Morocco
E. Feddi*
Affiliation:
Laboratoire de Matière Condensée et Sciences Interdisciplinaires (LaMCScI), Group of Optoelectronic of Semiconductors and Nanomaterials, ENSET, Mohammed V University in Rabat, Rabat 10100, Morocco
G. Long*
Affiliation:
Department of Physics, Saint John's University, Jamaica, NY, 11439, USA
M. Sadoqi
Affiliation:
Department of Physics, Saint John's University, Jamaica, NY, 11439, USA
F. Dujardin
Affiliation:
LCP-A2MC, Université de Lorraine, 57000 Metz, France
Chuong V. Nguyen
Affiliation:
Department of Materials Science and Engineering, Le Quy Don Technical University, Hanoi, 100000, Vietnam
Nguyen N. Hieu
Affiliation:
Institute of Research and Development, Duy Tan University, Da Nang, 550000, Vietnam
Huynh V. Phuc
Affiliation:
Division of Theoretical Physics, Dong Thap University, Cao Lanh, 870000, Vietnam
*
Address all correspondence to E. Feddi at e.feddi@um5s.net.ma; G. Long at longg@stjohns.edu
Address all correspondence to E. Feddi at e.feddi@um5s.net.ma; G. Long at longg@stjohns.edu
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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.

Type
Research Letters
Information
MRS Communications , Volume 9 , Issue 2 , June 2019 , pp. 663 - 669
Copyright
Copyright © Materials Research Society 2019 

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