Bridging the efficiency gap: fully bridged dinuclear Cu(I)-complexes for singlet harvesting in high-efficiency OLEDs

Adv Mater. 2015 Apr 17;27(15):2538-43. doi: 10.1002/adma.201405897. Epub 2015 Mar 9.

Abstract

The substitution of rare metals such as iridium and platinum in light-emitting materials is a key step to enable low-cost mass-production of organic light-emitting diodes (OLEDs). Here, it is demonstrated that using a solution-processed, fully bridged dinuclear Cu(I)-complex can yield very high efficiencies. An optimized device gives a maximum external quantum efficiency of 23 ± 1% (73 ± 2 cd A(-1) ).

Keywords: copper complexes; organic light-emitting diodes; singlet harvesting; solution-processing; thermally activated delayed fluorescence.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Copper / chemistry*
  • Electrical Equipment and Supplies*
  • Models, Molecular
  • Molecular Conformation
  • Organometallic Compounds / chemistry*
  • Temperature

Substances

  • Organometallic Compounds
  • Copper