Bulletin of the American Physical Society
Mid-Atlantic Section 2022 Meeting
Volume 67, Number 20
Friday–Sunday, December 2–4, 2022; University Park, PA, Pennsylvania State University
Session E04: Nanostructures
2:00 PM–3:58 PM,
Saturday, December 3, 2022
Pennsylvania State University
Room: Osmond 106
Chair: Burcu OZDEN, Pennsylvania State University
Abstract: E04.00005 : CdS quantum dot surface defect emission for white light emitting diodes.*
3:11 PM–3:23 PM
Presenter:
Oscar Armando A Jorge Deodanes
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
Authors:
Oscar Armando A Jorge Deodanes
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
Juan C Menjívar Molina
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
Nelson F Méndez Cisneros
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
David A Rafael Pleitez
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
Jorge A Cuadra Aparicio
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
Hamilton A Ponce Elías
(Universidad Francisco Gavidia, Laboratorio de Nanotecnología; Universidad de El Salvador, Laboratorio de Espectroscopia Óptica.)
Carlos Rudamas
(Universidad de El Salvador, Laboratorio de Espectroscopia Óptica; Universidad Francisco Gavidia, Laboratorio de Nanotecnología.)
In this work, we report the synthesis of colloidal cadmium sulfide (CdS) QDs by a non-injection method at different temperatures. These QDs were optically characterized by PL and absorption spectroscopy. The PL bands, attributed to transition related to surface states, span in the visible region and a shift of the band maximum seems to appear a different extraction times. These interesting results indicate the possibility of use these QDs in down-conversion materials for WLED fabrication.
*This work was partially funded by the Consejo de Investigaciones Científicas of the Universidad de El Salvador under the project 09.20.
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