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Triplet Harvesting in White Organic Light-Emitting Diodes

Published online by Cambridge University Press:  07 January 2014

Simone Hofmann ,
Karl Leo  and
Malte C. Gather
Simone Hofmann
Affiliation:
Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany
Karl Leo
Affiliation:
Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany
Malte C. Gather
Affiliation:
Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, 01069 Dresden, Germany School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS, Scotland, UK
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Abstract

In this paper, we review our recent work on triplet harvesting (TH) and its application in white organic light-emitting diodes (OLEDs). This includes the configuration of highly efficient single unit two-color and tandem four-color white OLEDs reaching efficacies of more than 30 lm/W at 1000 cd/m², as well as the development of new blue fluorescent emitters. The new compounds are chemically designed to exhibit a high triplet energy to allow TH by a green phosphorescent emitter. In a first step towards white TH OLEDs, we fabricated blue-green TH OLEDs to prove the validity of our concept.

Keywords

organicoptoelectronicelectrical properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1629: Symposium N – Adaptive Soft Matter through Molecular Networks , 2014 , mrsf13-1629-n04-08
Copyright
Copyright © Materials Research Society 2014 

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References

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