Issue 31, 2013

Efficient light emitting devices based on phosphorescent partially doped emissive layers

Abstract

We report efficient organic light emitting devices employing an ultrathin phosphor emissive layer. The electroluminescent spectra of these devices can be tuned by introducing a low-energy emitting phosphor layer into the emission zone. Devices with the emissive layer consisting of multiple platinum-complex/spacer layer cells show a peak external quantum efficiency of 18.1%, which is among the best EQE values for platinum-complex based light emitting devices. Devices with an ultrathin phosphor emissive layer show stronger luminance decay with the operating time compared to the counterpart devices having a host–guest emissive layer.

Graphical abstract: Efficient light emitting devices based on phosphorescent partially doped emissive layers

Article information

Article type
Paper
Submitted
18 Apr 2013
Accepted
26 May 2013
First published
29 May 2013

J. Mater. Chem. C, 2013,1, 4663-4666

Efficient light emitting devices based on phosphorescent partially doped emissive layers

X. Yang and G. E. Jabbour, J. Mater. Chem. C, 2013, 1, 4663 DOI: 10.1039/C3TC30721B

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