Efficient and stable white organic light-emitting diodes employing a single emitter

Guijie Li, Tyler Fleetham, Jian Li

Research output: Contribution to journalArticle

116 Scopus citations

Abstract

Using a single tetradentate platinum emitter dubbed Pt7O7, efficient and stable white organic light-emitting diodes are developed. The excimer-based white devices achieve an external quantum efficiency (EQE) of 24.5%, coordinates of (0.37, 0.42) based on the Commission internationale de l'éclairage (CIE) system, and a color rendering index (CRI) of 70. Moreover, devices of Pt7O7 in a stable structure demonstrate operational lifetimes (50% initial luminance) of 36 h at an elevated driving current of 20 mA cm2, which corresponds to over 10 000 h at 100 cd m2.

Original languageEnglish (US)
Pages (from-to)2931-2936
Number of pages6
JournalAdvanced Materials
Volume26
Issue number18
DOIs
StatePublished - May 14 2014

Keywords

  • blue LEDs
  • organic light-emitting diodes
  • phosphorescence
  • platinum complexes
  • white LEDs

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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