Please use this identifier to cite or link to this item:
Title: Toward RGB LEDs based on rare earth-doped ZnO
Author: Frieiro Castro, Juan Luis
Guillaume, Clément
López Vidrier, Julià
Blázquez, O. (Oriol)
González-Torres, Sergio
Labbé, Christophe
Hernández Márquez, Sergi
Portier, Xavier
Garrido Fernández, Blas
Keywords: Díodes electroluminescents
Òxid de zinc
Light emitting diodes
Zinc oxide
Issue Date: 26-Aug-2020
Publisher: Institute of Physics (IOP)
Abstract: By using ZnO thin films doped with Ce, Tb or Eu, deposited via radiofrequency magnetron sputtering, we have developed monochromatic (blue, green and red, respectively) light emitting devices (LEDs). The rare earth ions introduced with doping rates lower than 2% exhibit narrow and intense emission peaks due to electronic transitions in relaxation processes induced after electrical excitation. This study proves zinc oxide to be a good host for these elements, its high conductivity and optical transparency in the visible range being as well exploited as top transparent electrode. After structural characterization of the different doped layers, a device structure with intense electroluminescence is presented, modeled, and electrically and optically characterized. The different emission spectra obtained are compared in a chromatic diagram, providing a reference for future works with similar devices. The results hereby presented demonstrate three operating monochromatic LEDs, as well as a combination of the three species into another one, with a simply-designed structure compatible with current Si technology and demonstrating an integrated red-green-blue emission.
Note: Versió postprint del document publicat a:
It is part of: Nanotechnology, 2020, vol. 31, num. 46, p. 465207
Related resource:
ISSN: 0957-4484
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

Files in This Item:
File Description SizeFormat 
703117.pdf1.24 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.