GaAs Quantum Dot Confined with a Woods–Saxon Potential: Role of Structural Parameters on Binding Energy and Optical Absorption

Autor:	Hassen Dakhlaoui, Walid Belhadj, Haykel Elabidi, Fatih Ungan, Bryan M. Wong
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	optical absorption coefficient spherical quantum dots Schrödinger equation hydrogenic impurity Woods–Saxon potential Inorganic chemistry QD146-197
Zdroj:	Inorganics, Vol 11, Iss 10, p 401 (2023)
Druh dokumentu:	article
ISSN:	2304-6740
DOI:	10.3390/inorganics11100401
Popis:	We present the first detailed study of optical absorption coefficients (OACs) in a GaAs quantum dot confined with a Woods–Saxon potential containing a hydrogenic impurity at its center. We use a finite difference method to solve the Schrödinger equation within the framework of the effective mass approximation. First, we compute energy levels and probability densities for different parameters governing the confining potential. We then calculate dipole matrix elements and energy differences, E1p−E1s, and discuss their role with respect to the OACs. Our findings demonstrate the important role of these parameters in tuning the OAC to enable blue or red shifts and alter its amplitude. Our simulations provide a guided path to fabricating new optoelectronic devices by adjusting the confining potential shape.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/baf30e950f58476daa08e8a6facbbf4f Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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