Iminodibenzyl-substituted distyrylarylenes as dopants for blue and white organic light-emitting devices

Meng Huan Ho*, Chia Ming Chang, Ta Ya Chu, Teng-Ming Chen, Chin H. Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

A series of highly efficient blue materials based on iminodibenzyl-substituted distyrylarylene (IDB-series) fluorescent dyes using the concept of steric-compression have been designed and synthesized by means of a rigidized and over-sized ring. The steric-compression effect can shorten the effective conjugation length (chromophore) of the molecule and the added phenyl moiety in the core can alleviate the propensity for molecular aggregation. These materials also possess high glass transition temperature over 100 °C. The blue IDB-Ph device achieved a maximum external quantum efficiency of 4.8% with a Commission Internationale de l'Eclairage (CIEx,y) coordinate of (0.16, 0.28). When applied in two-element white OLED system, the IDB-Ph doped device achieved a luminance efficiency of 11.0 cd/A with a CIEx,y color coordinate of (0.29, 0.36).

Original languageEnglish
Pages (from-to)101-110
Number of pages10
JournalOrganic Electronics
Volume9
Issue number1
DOIs
StatePublished - 1 Jan 2008

Keywords

  • Distyrylarylenes
  • Fluorescent blue material
  • Iminodibenzyl
  • Organic electroluminescent device

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