Photo/electroluminescent properties of novel bipolar oligomers

O. K. Kim, H. Y. Woo, K. S. Lee, J. K. Kim, D. Y. Kim, H. K. Shim, C. Y. Kim

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Bipolar light-emitting (LE) oligomers consisting of three sequential segments centered by dithienothiophene (DTT) as π-center and attached by D/D or D/A pair: D-π-D (dye 1) or D-π-A (dye 2) where D and A refer to hole-transporting (HT) and electron-transporting (ET) units, respectively. Their redox properties are alike, suggesting the resemblance in bipolarity. Photoluminescence (PL) shows that the symmetric D/D system has a higher PL quantum efficiency relative to the D/A system. Electroluminescence (EL) from a single-layer device using a PVK blend displays a slightly higher light intensity with D/A system while EL quantum efficiency of D/D system doubles that of D/A system.

Original languageEnglish
Pages (from-to)1607-1608
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 2001 Mar 15
Externally publishedYes


  • Electroluminescence and organic semiconductors
  • Photoluminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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