Issue 43, 2011
From the journal:

Dalton Transactions

Screening structure–property correlations and device performance of Ir(iii) complexes in multi-layer PhOLEDs†

Nan Tian,ac   Daniel Lenkeit,a   Simon Pelz,a   Dimitrios Kourkoulos,b   Dirk Hertel,b   Klaus Meerholz*b  and  Elisabeth Holder*ac  

* Corresponding authors

a Functional Polymers Group and Institute of Polymer Technology, University of Wuppertal, Gaußstr. 20, D-42097 Wuppertal, Germany
E-mail: holder@uni-wuppertal.de
Fax: +49-202-439-3880
Tel: +49-202-439-3879

b Institute of Physical Chemistry, University of Cologne, Luxemburgerstr. 116, D-50939 Cologne, Germany
E-mail: klaus.meerholz@uni-koeln.de
Fax: +49-221-470-5144
Tel: +49-221-470-3275

c Dutch Polymer Institute (DPI), P. O. Box 513, NL-5600 AX Eindhoven, The Netherlands

Abstract

The structure–property correlations of a set of heteroleptic red- and green-emitting Ir(III) complexes with different temperature sensitivities and charge trapping capabilities are described, revealing superb performance in multi-layer phosphorescent organic light-emitting diodes (PhOLEDs) expressed by very high maximum luminous efficiencies up to 36.8 cd A−1. Using 2-phenylpyridine and with 2-(naphthalen-1-yl)pyridine as the C⁁N ligand, the resulting red emitting complex featured a maximum luminous efficiency of 10.8 cd A−1; one of the most excellent device performances within this class of red Ir(III) emitters.

Graphical abstract: Screening structure–property correlations and device performance of Ir(iii) complexes in multi-layer PhOLEDs

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Article information

DOI
https://doi.org/10.1039/C1DT11059D
Article type
Paper
Submitted
06 Jun 2011
Accepted
22 Aug 2011
First published
30 Sep 2011

Dalton Trans., 2011,40, 11629-11635

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Screening structure–property correlations and device performance of Ir(III) complexes in multi-layer PhOLEDs

N. Tian, D. Lenkeit, S. Pelz, D. Kourkoulos, D. Hertel, K. Meerholz and E. Holder, Dalton Trans., 2011, 40, 11629 DOI: 10.1039/C1DT11059D

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