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Novel Er-doped organic complexes for application in 1.5 μm emitting solution-processed organic light emitting diodes (OLEDs)

Published online by Cambridge University Press:  14 January 2011

Carmen Coya ,
Angel Luis Álvarez ,
Jesús Martín Gil ,
María Martín ,
Pablo Martín Ramos  and
Carlos Zaldo
Carmen Coya
Affiliation:
Escuela Superior de Ciencias Experimentales y Tecnología. Universidad Rey Juan Carlos. 28933 Madrid, Spain.
Angel Luis Álvarez
Affiliation:
Escuela Superior de Ciencias Experimentales y Tecnología. Universidad Rey Juan Carlos. 28933 Madrid, Spain.
Jesús Martín Gil
Affiliation:
Tecnologías del Medio Ambiente. Escuela Técnica Superior de Ingeniería Agrarias. Universidad de Valladolid. 34004, Palencia, Spain.
María Martín
Affiliation:
Escuela Técnica Superior de Ingeniería de Telecomunicación. Universidad Rey Juan Carlos. 28933 Madrid, Spain.
Pablo Martín Ramos
Affiliation:
Tecnologías del Medio Ambiente. Escuela Técnica Superior de Ingeniería Agrarias. Universidad de Valladolid. 34004, Palencia, Spain.
Carlos Zaldo
Affiliation:
Instituto de Ciencia de Materiales. Consejo Superior de Investigaciones Científicas. 28049, Cantoblanco, Madrid, Spain.
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Abstract

We describe the fabrication and characterization of solution processed organic light emitting diodes (OLEDs) based on novel near-infrared emitting erbium(III) complexes, consisting of three perfluoroalkyl-β-diketone ligands and 5-NO2-1,10-phenanthroline as chelating N,N-donor molecule. The function of N,N molecule is to saturate the coordination sphere of the erbium ion and to harvest excitation light that can be transferred to the excited states of the erbium ion. The devices have been fabricated by spin-coating, using 1 %wt methanol precursor solutions. These Er-complexes form very uniform thin films. The OLED structure is glass/indium–tin oxide(ITO) / poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT:PSS)/Er-complex/Ca/Al. The good electrical response, with low threshold voltages (a few volts), together with the very uniform thin films formed, made these complexes promising for IR emitting displays.

Keywords

optoelectronicdisplayorganometallic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1286: Symposium E – Molecular and Hybrid Materials for Electronics and Photonics , 2011 , mrsf10-1286-e03-34
Copyright
Copyright © Materials Research Society 2011

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References

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