Research Article

The Effect of The Geometry of Side Quantum Wells on The Optical Properties of Triple Quantum Wells Under The Electric Field Influence

Volume: 46 Number: 1 March 25, 2025
EN

The Effect of The Geometry of Side Quantum Wells on The Optical Properties of Triple Quantum Wells Under The Electric Field Influence

Abstract

The electronic and optical properties of the symmetrical 〖Al〗_x 〖Ga〗_(1-x) As/GaAs multiple quantum wells were investigated. The system consists of three triangular-shaped quantum wells in which the potentials of left- and right-hand side wells were shallower in comparison with that of the center well. The calculations were carried out for different potential shapes as the triangular shapes of the left- and right-hand side wells varied from triangle to square shape keeping the center well potential constant. The energy levels were calculated using the finite difference method under the effective mass approximation, with and without an electric field. When the geometry of the side wells was changed from shallow triangular side wells to square side wells in the absence of an electric field, the optical transitions were found to shift towards smaller photon energies. When an electric field was applied, the optical absorption and refractive index changes for the (1-2) transition exhibited interesting behavior. It was found that the electronic and optical properties of structures can be controlled by the externally applied electric field by selecting appropriate structural parameters.

Keywords

Supporting Institution

Trakya University

Project Number

Bu makale Trakya Üniversitesi Bilimsel Araştırma Projesi (BAP) Merkezi tarafından 2024/117 nolu "Teşvik Projeleri" projesi kapsamında desteklenmiştir

Ethical Statement

There is no ethical situation

Thanks

I would like to thank Trakya University Scientific Research Center (BAP) for their support.

References

  1. [1]Umansky V., Heiblum, M., Levinson Y., Smet, J. Nübler J., Dolev M., MBE growth of ultra-low disorder 2DEG with mobility exceeding 35 X 10(6) cm(2)/V s, Journal of Crystal Growth. 311 (7) (2009) 1658-1661.
  2. [2] Fu K., Growth Dynamics of Semiconductor Nanostructures by MOCVD, PD Thesis, School of Biotechnology (BIO), Theoretical Chemistry, (PhD dissertation, KTH), (2009), Retrieved from https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11447 (Retrieved May 2, 2024.)
  3. [3] Hasegawa S., Sato M., Maehashi K., Asahi H., Nakashima, H., Formation of quantum well wire-like structures by MBE growth of AlGaAs/GaAs superlattices on GaAs (110) surfaces, Journal of crystal growth. 111 ( 1-4) (1991) 371-375.
  4. [4]Hara S. Motohisa Ju., Fukui T., Hasegawa H., Quantum Well Wire Fabrication Method Using Self-Organized Multiatomic Steps on Vicinal (001) GaAs Surfaces by Metalorganic Vapor Phase Epitaxy, Japan Journal Applied Physics. 34 (1995) 4401-4404.
  5. [5] Sato M., Maehashi K., Asahi H., Hasegawa S, Nakashima H., MBE growth of AlGaAs/GaAs superlattices on GaAs (110) substrates, Superlattices and Microstructures 7 (4) (1990) 279-282.
  6. [6] Bozyigit, D., Wood, V., Challenges and solutions for high-efficiency quantum dot-based LEDs, MRS Bulletin. 38 (9) (2013) 731–736.
  7. [7] Bozyigit D., Yarema O. Wood V., Origins of Low Quantum Efficiencies in Quantum Dot LEDs. Advanced Function Materials. 23 (24) (2013) 3024-3029.
  8. [8] Wood V. , Bulović V., Colloidal quantum dot light-emitting devices, Nano Reviews. 1 (2010).

Details

Primary Language

English

Subjects

Quantum Optics and Quantum Optomechanics

Journal Section

Research Article

Publication Date

March 25, 2025

Submission Date

July 12, 2024

Acceptance Date

December 30, 2024

Published in Issue

Year 2025 Volume: 46 Number: 1

APA
Bekar, B. (2025). The Effect of The Geometry of Side Quantum Wells on The Optical Properties of Triple Quantum Wells Under The Electric Field Influence. Cumhuriyet Science Journal, 46(1), 125-131. https://doi.org/10.17776/csj.1515106

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