Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

Interfacial TADF exciplex as a tool to localise excitons, improve efficiency and increase OLED lifetime.

Colella, Marco and Pander, Piotr Henryk and Pereira, Daniel De Sa and Monkman, Andrew P. (2018) 'Interfacial TADF exciplex as a tool to localise excitons, improve efficiency and increase OLED lifetime.', ACS applied materials & interfaces., 10 (46). pp. 40001-40007.

Abstract

In this work, we employ a TADF exciplex formed between the emissive layer (EML) host, 26DCzPPy, and the electron transport layer (ETL), PO-T2T at the interface between the EML and the ETL to improve the stability and efficiency of a phosphorescence OLED based on Ir(dmpq)2acac. We show that the presence of the TADF exciplex at the EML-ETL interface induces an efficient localisation of the recombination zone which is confined within the 5 nm thick EML. Furthermore, the TADF exciplex allows harvesting of the holes and electrons that piled-up at the EML-ETL interface and transfer the resultant excited state energy to the phosphorescent emitter through Förster and/or Dexter energy transfer. This approach effectively improves the LT90 of devices from <1 min to 6 h by limiting recombination processes outside of the 5 nm EML.

Item Type:Article
Full text:(AM) Accepted Manuscript
First Live Deposit - 06 November 2018
Download PDF
(725Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1021/acsami.8b15942
Publisher statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS applied materials & interfaces copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.8b15942
Record Created:06 Nov 2018 11:28
Last Modified:01 Nov 2019 01:01

Social bookmarking: del.icio.usConnoteaBibSonomyCiteULikeFacebookTwitterExport: EndNote, Zotero | BibTex
Look up in GoogleScholar | Find in a UK Library