Optical Properties in a ZnS/CdS/ZnS Core/Shell/Shell Spherical Quantum Dot: Electric and Magnetic Field and Donor Impurity Effects

dc.creatorToscano Negrette, Rafael Guillermo
dc.creatorLeón González, José Carlos
dc.creatorVinasco Suárez, Juan Alejandro
dc.creatorMorales Aramburo, Álvaro Luis
dc.creatorKoc, Fatih
dc.creatorKavruk, Ahmet Emre
dc.creatorSahin, Mehmet
dc.creatorMora Ramos, Miguel Eduardo
dc.creatorSierra Ortega, José
dc.creatorMartínez Orozco, Juan Carlos
dc.creatorRestrepo Arango, Ricardo León
dc.creatorDuque Echeverri, Carlos Alberto
dc.date2023-03-04T18:49:30Z
dc.date2023-03-04T18:49:30Z
dc.date2023
dc.date.accessioned2024-04-23T17:55:47Z
dc.date.available2024-04-23T17:55:47Z
dc.identifierToscano-Negrette RG, León-González JC, Vinasco JA, Morales AL, Koc F, Kavruk AE, Sahin M, Mora-Ramos ME, Sierra-Ortega J, Martínez-Orozco JC, Restrepo RL, Duque CA. Optical Properties in a ZnS/CdS/ZnS Core/Shell/Shell Spherical Quantum Dot: Electric and Magnetic Field and Donor Impurity Effects. Nanomaterials (Basel). 2023 Jan 29;13(3):550. doi: 10.3390/nano13030550.
dc.identifierhttps://hdl.handle.net/10495/33692
dc.identifier10.3390/nano13030550
dc.identifier2079-4991
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9230093
dc.descriptionABSTRACT: A theoretical analysis of optical properties in a ZnS/CdS/ZnS core/shell/shell spherical quantum dot was carried out within the effective mass approximation. The corresponding Schrödinger equation was solved using the finite element method via the 2D axis-symmetric module of COMSOL-Multiphysics software. Calculations included variations of internal dot radius, the application of electric and magnetic fields (both oriented along z-direction), as well as the presence of on-center donor impurity. Reported optical properties are the absorption and relative refractive index change coefficients. These quantities are related to transitions between the ground and first excited states, with linearly polarized incident radiation along the z-axis. It is found that transition energy decreases with the growth of internal radius, thus causing the red-shift of resonant peaks. The same happens when the external magnetic field increases. When the strength of applied electric field is increased, the opposite effect is observed, since there is a blue-shift of resonances. However, dipole matrix moments decrease drastically with the increase of the electric field, leading to a reduction in amplitude of optical responses. At the moment impurity effects are activated, a decrease in the value of the energies is noted, significantly affecting the ground state, which is more evident for small internal radius. This is reflected in an increase in transition energies.
dc.descriptionCOL0033319
dc.format18
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherMDPI
dc.publisherGrupo de Materia Condensada-UdeA
dc.publisherBasilea, Suiza
dc.relationNanomaterials
dc.rightsAtribución 2.5 Colombia
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by/2.5/co/
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.subjectMass attenuation coefficients
dc.subjectCampos magnéticos
dc.subjectMagnetic fields
dc.subjectCampos eléctricos
dc.subjectElectric fields
dc.subjectDonor impurity
dc.subjectCore/shell/shell quantum dot
dc.subjecthttp://id.loc.gov/authorities/subjects/sh85081856
dc.titleOptical Properties in a ZnS/CdS/ZnS Core/Shell/Shell Spherical Quantum Dot: Electric and Magnetic Field and Donor Impurity Effects
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typehttp://purl.org/coar/resource_type/c_2df8fbb1
dc.typehttps://purl.org/redcol/resource_type/ART
dc.typeArtículo de investigación


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