Analytical formulation for exciton in semiconductor quantum dot with parabolic confinement
Creators
- 1. Regional Center for Education and Training Professions, Department of Physical Sciences, Tangier, Morocco
Description
The exciton properties in cubical quantum dot (CQD), with parabolic confining potential, are theoretically investigated. We have used the two-band model, the effective mass approximation, and the variational method. The analytical expressions of the binding energy, the normalized photoluminescence (PL) energy transition, the spatial extension, and the oscillator strength of the exciton, in the ground state, have been obtained. The numerical calculations for the typical GaAs/Al x Ga1−x As CQD are presented. The effects of the CQD length and the Al concentration on the exciton properties are discussed. The results of the calculation illuminate that Al concentration and the CQD length can make an important impact on the exciton binding energy and the PL peak energy. (author)
Additional details
Identifiers
- EISSN
- 1208-6045;
- DOI
- 10.1139/cjp-2023-0034;
Publishing Information
- Journal Title
- Canadian Journal of Physics
- Journal Volume
- 102
- Journal Issue
- 1
- Journal Page Range
- 11-18
- ISSN
- 0008-4204
- CODEN
- CJPHAD
INIS
- Country of Publication
- Canada
- Country of Input or Organization
- Canada
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Descriptors DEI
- BAND THEORY; BINDING ENERGY; CONCENTRATION RATIO; CONFINEMENT; EFFECTIVE MASS; ELECTRON-HOLE COUPLING; EXCITONS; GALLIUM ARSENIDES; GROUND STATES; OSCILLATOR STRENGTHS; OSCILLATORS; PEAKS; PHOTOLUMINESCENCE; QUANTUM DOTS; SEMICONDUCTOR MATERIALS; VARIATIONAL METHODS
- Descriptors DEC
- ARSENIC COMPOUNDS; ARSENIDES; CALCULATION METHODS; COUPLING; DIMENSIONLESS NUMBERS; ELECTRONIC EQUIPMENT; EMISSION; ENERGY; ENERGY LEVELS; EQUIPMENT; GALLIUM COMPOUNDS; LUMINESCENCE; MASS; MATERIALS; NANOSTRUCTURES; PHOTON EMISSION; PNICTIDES; QUASI PARTICLES