Efficient Red-Emitting Platinum Complex with Long Operational Stability

Tyler Fleetham, Guijie Li, Jian Li

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

A tetradentate cyclometalated Pt(II) complex, PtN3N-ptb, was developed as an emissive dopant for stable and efficient red phosphorescent OLEDs. Devices employing PtN3N-ptb in electrochemically stable device architectures achieved long operational lifetimes with estimated LT97, of over 600 h at luminances of 1000 cd/m2. Such long operational lifetimes were achieved utilizing only literature reported host, transporting and blocking materials with known molecular structures. Additionally, a thorough study of the effects of various host and transport materials on the efficiency, turn on voltage, and stability of the devices was carried out. Ultimately, maximum forward viewing EQEs as high as 21.5% were achieved, demonstrating that Pt(II) complexes can act as stable and efficient dopants with operational lifetimes comparable or superior to those of the best literature-reported Ir(III) complexes.

Original languageEnglish (US)
Pages (from-to)16240-16246
Number of pages7
JournalACS Applied Materials and Interfaces
Volume7
Issue number30
DOIs
StatePublished - Aug 5 2015

Keywords

  • efficiency
  • OLED
  • operational lifetime
  • phosphorescence
  • platinum complex
  • red emitter

ASJC Scopus subject areas

  • Materials Science(all)

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