White light emitting diode prototypes based on cadmium sulfide and graphene carbon quantum dots

Authors

  • O. Deodanes Universidad de El Salvador
  • J. Cuadra Universidad de El Salvador
  • H. Ponce Universidad de El Salvador
  • J. C. Molina Universidad de El Salvador
  • D. Pleitez Universidad de El Salvador
  • C. Violantes Universidad de El Salvador
  • C. Rudamas Universidad de El Salvador

Keywords:

Down conversion, Stokes’s shift, Surface defects, CdS QDs

Abstract

During the last years, semiconductor quantum dots (QDs) have attracted great attention due to the outstanding properties for solid-state lighting, display technology, biosensors, among others. White light emitting diodes (WLEDs) using down conversion approach is one of the new attractive alternatives in solid-state lighting. However, these devices present several shortcomings as near-UV light escape and
QD-polymer incompatibility. In this work, we propose alternative

Downloads

Download data is not yet available.

Author Biographies

O. Deodanes, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y Matemática

J. Cuadra, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y Matemática, 

H. Ponce, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y Matemática

J. C. Molina, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y Matemática

D. Pleitez, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y Matemática

C. Violantes, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y Matemática

C. Rudamas, Universidad de El Salvador

Laboratorio de Espectroscopia Óptica, Escuela de Física, Facultad de Ciencias Naturales y
Matemática

References

Bansal A, Antolini F, Zhang S, Stroea S. 2016. Highly luminescent colloidal CdS quantum dots with efficient near-infrared electroluminescence in light-emitting diodes. J. Phys. Chem. C. 120(3): 1871-1880. Available from: doi://doi. org/10.1021/acs.jpcc.5b09109

Chou C, Wang T, Chen W, Yang C. 2019. Quantum dot-acrylic acrylate oligomer hybrid films for stable white light-emitting diodes. ACS Omega. 4: 3234-3243. Available from: doi: //doi.org/10.1021/ acsomega.8b03241

J. Cuadra, H. Ponce and C. Rudamas, 2018. Optical properties of graphene carbon quantum dots for solar cells applications. In: IEEE 38th Central America and Panama Convention (CONCAPAN XXXVIII). Available from: doi: 10.1109/ CONCAPAN.2018.8596611

KKathirgamanathan P, Bushby L, Kuma ravel M, Ravichandran S, Surendra Kumar S. 2015 Electroluminiscent organic and quantum dot LEDs: The state of the art. J Disp Technol. 11(55): 480-493. Available from: doi: doi:10.1109/jdt.2015.2418279

Li F, Nie C, You L, Jin X, Qin Z, Qin Y, Zhao F, Son Y, Chen Z, Li Q. 2018. White light emitting device based on single-phase CdS quantum dots. Nanotechnology. 29: 205701, and references therein.

Ponce H. and Rudamas C. (2015) Caracterización óptica de defectos superficiales en puntos cuánticos coloidales de Seleniuro de Cadmio (CdSe). Materia, 20, 676 – 681. Available from: 10.1590/S1517-707620150003.0070

Shen, Y and Gee M, Greytak A.B. 2017. Purification technologies for colloidal nanocrystals. Chem Commun. 53(5):827-841. Available from: doi: 10.1039/c6cc07998a

Yu W W, Qu L, Guo W, Peng X. 2003. Experimental determination of the extinction coeffficient of CdTe, CdSe, and CdS nanocrystals. Chem Mater. 15(14): 2854-2860. Available from: //doi.org/10.1021/cm034081k

Yi L. 2016. Application of quantum dots as down conversion materials in white LED. IJEI. 6(1): 07-12. Available from: http://www.ijeijournal.com/papers/Vol.6-Iss.1/B06010712.pdf.

Downloads

Published

2022-04-05

How to Cite

Deodanes, O., Cuadra, J., Ponce, H., Molina, J. C., Pleitez, D., Violantes, C., & Rudamas, C. (2022). White light emitting diode prototypes based on cadmium sulfide and graphene carbon quantum dots. Revista Comunicaciones Científicas Y Técnológicas, 6(1), 15. Retrieved from https://revistas.ues.edu.sv/index.php/comunicaciones/article/view/2133

Issue

Vol. 6 (no. 1), julio, 2021

Section

Artículo científico

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.