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

Volz, Daniel; Chen, Ying; Wallesch, Manuela; Liu, Rui; Fléchon, Charlotte; Zink, Daniel M; Friedrichs, Jana; Flügge, Harald et al. · Adv Mater · 2015

basic_science · Level V

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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) ).

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