Inside Front Cover

Inside Front Cover: Excimer-Based White Phosphorescent Organic Light-Emitting Diodes with Nearly 100 % Internal Quantum Efficiency (Adv. Mater. 2/2007)

  1. E. L. Williams,
  2. K. Haavisto,
  3. J. Li,
  4. G. E. Jabbour

Article first published online: 12 JAN 2007

DOI: 10.1002/adma.200790008

Issue

Advanced Materials

Advanced Materials

Volume 19, Issue 2, page n/a, January, 2007

Additional Information

How to Cite

Williams, E., Haavisto, K., Li, J. and Jabbour, G. (2007), Inside Front Cover: Excimer-Based White Phosphorescent Organic Light-Emitting Diodes with Nearly 100 % Internal Quantum Efficiency (Adv. Mater. 2/2007). Advanced Materials, 19: n/a. doi: 10.1002/adma.200790008

Author Information

  1. School of Materials and Flexible Display Center, Arizona State University, Tempe, AZ 85284, USA

Publication History

  1. Issue published online: 12 JAN 2007
  2. Article first published online: 12 JAN 2007

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Keywords:

  • Doping;
  • Light-emitting diodes, organic (OLEDs);
  • Phosphorescence;
  • Quantum efficiency

Efficient excimer emission is demonstrated in white organic light-emitting diodes (see figure) based on platinum(II)[2-(4′,6′-difluorophenyl)pyridinato-N, C2′)](2,4-pentanedionato) utilized in devices incorporating the novel host material 2,6-Bis(N-carbazolyl)pyridine (26mCPy). External quantum (power) efficiencies of 15.9 % (12.6 lm W–1) are realized at 500 cd m–2.

Abstract

By combining the monomer and excimer/aggregate emission of FPt, a white OLED can be obtained. Incorporating the novel host material 26mCPy and engineering the charge balance properties, Jabbour and co-workers used FPt to demonstrate, for the first time, nearly 100% internal quantum efficiency in white OLEDs (as shown in the image). The work is reported on p. 197.

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