Issue 11, 2015

Fluorene co-polymers with high efficiency deep-blue electroluminescence

Abstract

Two new deep blue emitting co-polymers are synthesised and exploited in highly-efficient solution-processed polymer light-emitting diodes (PLEDs). A key molecular design feature is selective functionalisation of 9,9-diphenylfluorene to disrupt backbone π-conjugation, thereby promoting luminescence from short emissive domains (λELmax 422 and 401 nm for P1 and P2 devices, respectively). PLEDs using P1 and P2 in the hybrid architecture ITO/PEDOT:PSS/polymer/TPBi/LiF/Al show low turn-on voltages and remarkably high EQE values of ηext,max 3.3%, Lmax of 167 cd m−2 with CIExy coordinates (0.17, 0.10) for P1; and 3.9%, 274 cd m−2, CIExy (0.17, 0.07) for P2. These performances are currently among the best for PLEDs with CIEy ≤ 0.10.

Graphical abstract: Fluorene co-polymers with high efficiency deep-blue electroluminescence

Supplementary files

Article information

Article type
Paper
Submitted
02 दिसम्बर 2014
Accepted
25 जनवरी 2015
First published
04 फरवरी 2015

J. Mater. Chem. C, 2015,3, 2479-2483

Fluorene co-polymers with high efficiency deep-blue electroluminescence

J. Santos, J. H. Cook, H. A. Al-Attar, A. P. Monkman and M. R. Bryce, J. Mater. Chem. C, 2015, 3, 2479 DOI: 10.1039/C4TC02766C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements