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Issue 6, 2009
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Molecular engineering to improve the charge carrier balance in single-layer silole-based OLEDs

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Abstract

We report a molecular engineering study on optical, structural and electrical properties of seven silole derivates aimed at enhancing the charge carrier balance in single-layer devices. By functionalizing two hole-transporting groups, dipyridylamine and anthracene, on the silole ring, we have investigated the influence of both substituents on the hole current. We have concluded that in contrast to dipyridylamine groups, anthracene groups decrease the charge carrier balance since the latter groups not only increase the hole current but also electron contribution. Mixing these hole-transporting groups and doubling their number lead to a novel silole becoming a very efficient emissive layer exhibiting threshold voltage below 3 V and luminous efficiency Le = 0.8 cd A−1 at 7 V.

Graphical abstract: Molecular engineering to improve the charge carrier balance in single-layer silole-based OLEDs

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Publication details

The article was received on 15 Jan 2009, accepted on 31 Mar 2009 and first published on 27 Apr 2009


Article type: Paper
DOI: 10.1039/B900780F
New J. Chem., 2009,33, 1290-1300

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    Molecular engineering to improve the charge carrier balance in single-layer silole-based OLEDs

    L. Aubouy, N. Huby, L. Hirsch, A. van der Lee and P. Gerbier, New J. Chem., 2009, 33, 1290
    DOI: 10.1039/B900780F

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