Luminescent Eu3+ dibenzoylmethanate complex with sulfoxide ligand as sensitizer applied to organic light- emitting diodes Image Correlation for the measurement of 3D displacements and strains
R. Reyes, E. Niyama, E.E.S. Teotonio, H.F. Brito, M. Cremona
Descargar artículo
Información básica
Volumen
V50 - N2 / 2017 Ordinario
Referencia
135-143
DOI
http://doi.org/10.7149/OPA.50.2.49012
Idioma
English
Etiquetas
Europium; Photoluminescence; Electroluminescence; Electrophosphorescence; OLED
Resumen
In this work the synthesis, characterization and photoluminescent and electroluminescent behavior ofthe [Eu(DBM)3(PTSO)2] complex have been investigated. The emission spectrum of this Eu3+-β-diketonate complex show characteristics narrow bands arising from the 5D0->7FJ (J = 0-4) transitions,which are split according to the selection rule for Cs, Cn or Cnv site symmetries. Triple and double-layer organic light-emitting diodes (OLEDs) using NPB as hole transporting layer, Alq3 as electron transporting layer and [Eu(DBM)3(PTSO)2] complex as emitting and electron transporting layer were grown and characterized. We found the presence of two concurrent mechanisms for the electroluminescent behavior: (1) the electroluminescence (EL) from the exciton-ligand-Eu3+ ion energy transfer, responsible for the EL narrow bands; and (2) the molecular electrophosphorescence with an initial energy transfer exciton-ligand and posterior intersystem crossing from the excited singlet S1 to the triplet T state followed by molecular phosphorescence (T->S0). The electroluminescent behavior of [Eu(DBM)3(PTSO)2] complex suggest that this complex is promising to applied at Light Conversion Molecular Devices (LCMDs) such as in OLED devices.
Referencias
B. Geffroy, P.L. Roy, C. Prat, "Organic light-emitting diode (OLED) technology: materials, devices and display technologies," Polym. Int. 55, 572–582 (2006).DOI
E.R. Triboni, M.R. Fernandes, J.R. Garcia, M.C. Carreira, R.G.S. Berlinck, P. Berci, L.S. Roman, I.A.Hümmelgen, R. Reyes, M. Cremona, "Naphthalimide-derivative with blue electroluminescence forOLED applications," J. Taibah U. Sci. 9, 579-585 (2015).DOI
R. Reyes, M. Cremona, C.A. Achete, "Light emission in forward and reverse bias operation in OLED with amorphous silicon carbon nitride thin films," J. Phys.: Conf. Ser. 274, 012121 (2011).DOI
C. J. Liang, D. Zhao, Z. R. Hong, D. X. Zhao, X. Y. Liu, W. L. Li, J. B. Peng J. Q. Yu, C. S. Lee S. T. Lee, "Improved performance of electroluminescent devices based on an europium complex," Appl. Phys. Lett. 76, 67-69 (2000).DOI
H. Xin, M. Shi, X.M. Zhang, F.Y. Li, Z.Q. Bian, K. Ibrahim, F.Q. Liu, C.H. Huang, "Carrier-transport,photoluminescence, and electroluminescence properties comparison of a series of terbium complexeswith different structures," Chem. Mater. 15, 3728-3733 (2003).DOI
R. Reyes, E.N. Hering, M. Cremona, C.F.B. Silva, H.F. Brito, C.A. Achete, "Growth and characterization of OLED with samarium complex as emitting and electron transporting layer," Thin Solid Films 420–421,23-29 (2002).DOI
Z. Hong, W.L. Li, D. Zhao, C. Liang, X. Liu, J. Peng, D. Zhao, "White light emission from OEL devices based on organic dysprosium-complex," Synth. Met. 111–112, 43-45 (2000).DOI
Z. Hong, W. Li, D. Zhao, C. Liang, X. Liu, J. Peng, D. Zhao, "Spectrally-narrow blue light-emitting organicelectroluminescent devices utilizing thulium complexes," Synth. Met. 104, 165-168 (1999).DOI
R.J. Curry, W.P. Gillin, "Infra-red and visible electroluminescence from ErQ based OLEDs," Synth. Met.111–112, 35-38 (2000).DOI
Z.R. Hong, C.J. Liang, R.G. Li, D. Zhao, D. Fan, W.L. Li, "Infrared electroluminescence of ytterbium complexes in organic light emitting diodes," Thin Solid Films 391, 122-125 (2001).DOI
H.F. Brito, O.L. Malta, M.C.F.C. Felinto, E.E.S. Teotonio, J.F.S. Menezes, C.F.B. Silva, C.S. Tomiyama, C.A.A.Carvalho, "Luminescence investigation of the Sm(III)-?-diketonates with sulfoxides, phosphineoxides and amides ligands," J. Alloys and Comp. 344, 293-297 (2002).DOI
J.M. Lehn, "Perspectives in supramolecular chemistry—from molecular recognition towards molecular information processing and self-organization," Angew. Chem. Int. Ed. Engl. 29, 1304-1319 (1990)DOI
E. Niyama, H.F. Brito, M. Cremona, E.E.S. Teotonio, R. Reyes, G.E.S. Brito, M.C.F.C. Felinto, "Synthesis and spectroscopic behavior of highly luminescent Eu3+–dibenzoylmethanate (DBM) complexes withsulfoxide ligands," Spectrochim. Acta Part A 61, 2643-2649 (2005).DOI
H.G. Liu, S. Park, K.W. Jang, X.S. Feng, C.D. Kim, H.J. Seo, Y.I. Lee, "Influence of ligands on the photoluminescent properties of Eu3+ in europium ?-diketonate/PMMA-doped systems," J. Lumin. 106,47-55 (2004).DOI
R.G. Charles, A. Perroto, "Rare earth dibenzoylmethides preparation, dehydration and thermal stability," J. Inorg. Nucl. Chem. 26, 373-376 (1964).DOI
W. Quirino, R. Reyes, C. Legnani, P.C. Nóbrega, P.A. Santa-Cruz, M. Cremona, "Eu-?-diketonate complex OLED as UV portable dosimeter," Synth. Met. 161, 964-968 (2011).DOI
A. Kirby, F.S. Richardson, "Detailed analysis of the optical absorption and emission spectra ofeuropium(3+) in the trigonal (C3) Eu(DBM)3.H2O system," J. Phys. Chem. 87, 2544-2556 (1983).DOI