Issue 10, 2009

Efficient non-doped blue-light-emitting diodes incorporating an anthracene derivative end-capped with fluorene groups

Abstract

We have synthesized and characterized a novel blue-emitting material, 2-tert-butyl-9,10-bis[4′-(9-p-tolyl-fluoren-9-yl)biphenyl-4-yl]anthracene (BFAn), containing an anthracene core end-capped with 9-phenyl-9-fluorenyl groups. The presence of the sterically congested fluorene groups imparts BFAn with a high thermal decomposition temperature (Td = 510 °C) and results in its forming a stable glass (Tg = 227 °C). Atomic force microscopy measurements revealed that BFAn forms high-quality amorphous films and possesses good morphological stability after annealing. Organic light-emitting diodes (OLEDs) featuring BFAn as the emitter exhibited an excellent external quantum efficiency of 5.1% (5.6 cd A−1) with Commission Internationale de L'Eclairage coordinates of (0.15, 0.12) that are very close to the National Television Standards Committee's blue standard. The power efficiency of our BFAn-based devices reached as high as 5.7 lm W−1, making them superior to other reported non-doped deep-blue OLEDs.

Graphical abstract: Efficient non-doped blue-light-emitting diodes incorporating an anthracene derivative end-capped with fluorene groups

Article information

Article type
Paper
Submitted
29 Sep 2008
Accepted
04 Dec 2008
First published
27 Jan 2009

J. Mater. Chem., 2009,19, 1464-1470

Efficient non-doped blue-light-emitting diodes incorporating an anthracene derivative end-capped with fluorene groups

C. Wu, C. Chien, F. Hsu, P. Shih and C. Shu, J. Mater. Chem., 2009, 19, 1464 DOI: 10.1039/B817031B

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.

Spotlight

Advertisements