articleScienceMar 31, 2017GREEN OA

High-performance light-emitting diodes based on carbene-metal-amides

DDDawei DiASAlexander S. RomanovLYLe YangJMJohannes M. RichterJPJasmine P. H. Rivett

University of Cambridge · University of East Anglia · +1 more institution

PubMed
Indexed inarxivcrossrefpubmed

Abstract

Organic light-emitting diodes (OLEDs) promise highly efficient lighting and display technologies. We introduce a new class of linear donor-bridge-acceptor light-emitting molecules, which enable solution-processed OLEDs with near-100% internal quantum efficiency at high brightness. Key to this performance is their rapid and efficient utilization of triplet states. Using time-resolved spectroscopy, we establish that luminescence via triplets occurs within 350 nanoseconds at ambient temperature, after reverse intersystem crossing to singlets. We find that molecular geometries exist at which the singlet-triplet energy gap (exchange energy) is close to zero, so that rapid interconversion is possible. Calculations…

Citation impact

600
total citations
FWCI
29.81
Percentile
100%
References
45
Citations per year

Authors

12
  • DD
    Dawei DiCorresponding

    University of Cambridge

  • AS
    Alexander S. Romanov

    University of East Anglia

  • LY
    Le Yang

    University of Cambridge

  • JM
    Johannes M. Richter

    University of Cambridge

  • JP
    Jasmine P. H. Rivett

    University of Cambridge

Topics & keywords

Topics
Keywords
  • Intersystem crossing
  • Diode
  • Nanosecond
  • OLED
  • Degeneracy (biology)
  • Quantum efficiency
  • Luminescence
  • Quantum
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