High-efficiency spin-coated organic light-emitting diodes based on a europium complex

  • Junfeng Fang
  • , Chum Chan Choy
  • , Dongge Ma*
  • , Eric C.W. Ou
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

An organic light-emitting diode fabricated by doping a europium complex tris(dibiphenoylmethane)-mono (phenanthroline)-europium (Eu(DBPM)3(Phen)) into polymer poly(2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene) and poly(N-carbazole) was realized by spin coating. Comparison with other europium complexes, due to the existence of a larger spectral overlap between Eu(DBPM)3(Phen) and poly(2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylene), a high efficiency red emission was achieved. The device showed a turn-on voltage of 5.2 V. The maximum efficiency reached 0.47 cd/A at luminance of 50 cd/m2. The maximum luminance can reach 150 cd/m2 at 95 mA/cm2. To the best of our knowledge, this is one of the best results based on europium complexes by spin-casting method.

Original languageEnglish
Pages (from-to)2419-2422
Number of pages4
JournalThin Solid Films
Volume515
Issue number4
DOIs
StatePublished - 5 Dec 2006
Externally publishedYes

Keywords

  • Doping
  • Europium complex
  • Organic light-emitting diodes

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