High efficiency white organic light emitting diodes using Rubrene doped N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4,4′-diamine as an emitting layer

Hsin Hsuan Huang, Sheng Yuan Chu, Po Ching Kao, Yung Chen Chen

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A bright white organic light emitting diode (WOLED) was fabricated in which a blue light emitting host NPB was doped with a tiny yellow dopant Rubrene. The device structure was ITO/NPB:Rubrene/BCP/Alq3/LiF/Al, where NPB is N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4,4′-diamine, Rubrene is 5,6,11,12-tetraphenylnaphthacene, BCP is 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, and Alq3 is tris(8-hydroxyquinoline) aluminum. White light emission was realized in an OLED with 2 % Rubrene doping concentration. A maximum luminance of 13550 cd/m2 and a power efficiency of 2.8 lm/W (7.9 cd/A) were obtained in the device. The Commission Internationale De L'Eclairage (CIE) (1931) coordinates of the white emission are well within the white zone, which moves from (0.35, 0.37) to (0.33, 0.35) when the applied voltage is varied from 6 V to 14 V.

Original languageEnglish
Pages (from-to)5669-5672
Number of pages4
JournalThin Solid Films
Volume516
Issue number16
DOIs
Publication statusPublished - 2008 Jun 30

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High efficiency white organic light emitting diodes using Rubrene doped N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4,4′-diamine as an emitting layer'. Together they form a unique fingerprint.

Cite this