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Synfacts 2007(2): 0152-0152  
DOI: 10.1055/s-2006-955808
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart · New York

Hole-Transport Layers for Polymer Light-Emitting Devices

Contributor(s): Timothy M. Swager
G. K. Paul, J. Mwaura, A. A. Argun, P. Taranekar, J. R. Reynolds*
University of Florida, Gainesville, USA
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Publication History

Publication Date:
23 January 2007 (online)

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Significance

The performance of polymer light-emitting devices (PLEDs) is strongly dependent upon the oxidation of the polymer (hole injection) that takes place at the anode. It is generally found that buffering the emitting layer from the metal oxide based electrode leads to enhancements in device performance. These hole injection layers (HILs) need to be chemically stable and mechanically durable. The dominantly used HILs are oxidized conducting polymers and the formulations generally include Brønstead acid groups that can degrade the emitting polymers. These materials avoid this acidic character.