http://dx.doi.org/10.1039/C3TC30912F">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Interfacial triplet confinement for achieving efficient solution-processed deep-blue and white electrophosphorescent devices with underestimated poly(N-vinylcarbazole) as the host

Language

English

Abstract

Highly efficient deep-blue and white PhOLEDs with FIr6 as a blue emitter and PVK as a host are developed by using a high triplet level interfacial layer to confine triplet excitons within the emissive layer. Incorporation of an interfacial layer with a higher triplet level such as TPCz can effectively cut off the potential loss pathways of the triplet excitons within the PVK:FIr6 emissive layer. The resultant PVK:FIr6-based deep-blue and white solution-processed PhOLEDs exhibit an unprecedented forward-viewing EQE of 16.1% and a total EQE of 28.0% (38.4 lm W-1) at a practical luminance of 1000 cd m-2, respectively. © 2013 The Royal Society of Chemistry.

Publication Date

2013

Source Publication Title

Journal of Materials Chemistry C

Volume

1

Issue

32

Start Page

4933

End Page

4939

Publisher

Royal Society of Chemistry

ISSN (print)

20507526

ISSN (electronic)

20507534

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