Repositorio UFRO · Omeka S

Intense Laser Field Effect on the Photo-Ionization Cross-Section of the First Exciton Transition in a Core/Shell Quantum Dot Submitted to an Applied Electric Field

Primer Autor	Perez, Laura M.
Co-autores	Aghoutane, Noreddine Laroze, David Diaz, Pablo El-Yadri, Mohamed Feddi, E. L. Mustapha
Título	Intense Laser Field Effect on the Photo-Ionization Cross-Section of the First Exciton Transition in a Core/Shell Quantum Dot Submitted to an Applied Electric Field
Editorial	MDPI
Revista	COATINGS
Lenguaje	en
Resumen	In the current work, we study the intense laser pulse influences on the behaviors of the first excitonic transition in a core/shell quantum dot submitted to an electric field. Therefore, the exciton binding energy and the mean distance between the correlated electron-hole pair are discussed, considering the electric field and laser strength. Our calculations show that both external fields play significant repulsive effects. Through their effects, they oppose the attractive nature of the Coulomb potential between the correlated pair, which decreases the excitonic binding energy. We also analyze the dissociation process by determining the photo-ionization cross-section (PICS). Our findings show that the peaks of the PICS redshift when the shell thickness b-a increases. For a given core radius, the laser and electric field induce a shift toward the low-energy region for the PICS, this displacement is more pronounced for the laser case. Our study also compares simple quantum dots and core/shell quantum dots to show the effect of the inner radius on the obtained results. Our theoretical results can lead to promising applications of exciton-based devices controlled by sizes and external fields.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.3390/coatings13061098
Formato Recurso	PDF
Palabras Claves	core/shell quantum dots exciton Intense laser field electric field photo-ionization cross-section exciton binding energy
Ubicación del archivo	http://dx.doi.org/10.3390/coatings13061098
Categoría OCDE	Ciencia de Materiales Física
Materias	puntos cuánticos de núcleo/capa excitón Intenso campo láser campo eléctrico sección transversal de fotoionización energía de enlace del excitón
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
License	CC BY 4.0
Condición de la licencia (Recomendado-repetible)	CC BY 4.0
Derechos de acceso	acceso abierto
Access Rights	acceso abierto
Id de Web of Science	WOS:001033333800001
Tipo de ruta	verde# dorado
Categoría WOS	Ciencia de Materiales Física
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID SA77210040 ANID BASAL AFB180001 ANID-FONDECYT 1231020 ANID FONDECYT 1231020