Fluorene derivatives for highly efficient non-doped single-layer blue organic light-emitting diodes

Xin Jiang Feng*, Shao Fu Chen, Yong Ni, Ricky M S WONG, Maggie M.K. Lam, Kok Wai CHEAH, Guo Qiao Lai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Diphenylamino- and triazole-endcapped fluorene derivatives which show a wide energy band gap, a high fluorescence quantum yield and high stability have been synthesized and characterized. Single-layer electroluminescent devices of these fluorene derivatives exhibited efficient deep blue to greenish blue emission at low driving voltage. The single-layer OLED of PhN-OF(1)-TAZ shows a maximum current efficiency of 1.54 cd/A at 20 mA cm-2 with external quantum efficiency (EQE) of 2.0% and CIE coordinates of (0.153, 0.088) in deep blue region, while the single-layer device of oligothienylfluorene PhN-OFOT-TAZ shows a maximum brightness of 7524 cd/m2 and a maximum current efficiency of 2.9 cd/A with CIE coordinates of (0.20, 0.40) in greenish blue.

Original languageEnglish
Pages (from-to)57-64
Number of pages8
JournalOrganic Electronics
Volume15
Issue number1
DOIs
Publication statusPublished - 2014

Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Blue
  • Fluorene derivatives
  • Nondoped
  • Organic light-emitting diodes
  • Single-layer

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