High-performance blue electroluminescent devices based on 2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole

Chem Commun (Camb). 2003 Nov 7:(21):2708-9. doi: 10.1039/b307571k.

Abstract

An electron transporting moiety (1,3,4-oxadiazole) and a hole transporting moiety (carbazole) were combined to create 2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole (CzOxa), a three layer device with a configuration of ITO/TPD(50 nm)/CzOxa(40 nm)/AlQ(40 nm)/Mg0.9Ag0.1(200 nm)/Ag(80 nm) which exhibited a blue emission peak at approximately 470 nm (x = 0.14, y = 0.19) with a maximum luminance of 26,200 cd m(-2) at a drive voltage of 15 V and a maximum luminous efficiency of 2.25 lm W(-1).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbazoles / chemistry*
  • Energy Transfer
  • Fluorescent Dyes / chemistry*
  • Luminescence
  • Models, Chemical
  • Oxadiazoles / chemistry*
  • Spectrophotometry, Ultraviolet

Substances

  • 2-(4-biphenylyl)-5-(4-carbazole-9-yl)phenyl-1,3,4-oxadiazole
  • Carbazoles
  • Fluorescent Dyes
  • Oxadiazoles