Work Function Independent Hole-Injection Barriers Between Pentacene and Conducting Polymers

The energy level alignment (see Figure) at interfaces between pentacene and thin films of conducting polymers (made from ethylenedioxythiophene and sulfonate moieties) is found to be independent of initial polymer work function or morphology. Interfacial chemical reactions control the energy level a...

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Published inAdvanced materials (Weinheim) Vol. 17; no. 3; pp. 330 - 335
Main Authors Koch, N., Elschner, A., Rabe, J. P., Johnson, R. L.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 10.02.2005
WILEY‐VCH Verlag
Subjects
Conducting polymers
Light-emitting materials
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Summary:The energy level alignment (see Figure) at interfaces between pentacene and thin films of conducting polymers (made from ethylenedioxythiophene and sulfonate moieties) is found to be independent of initial polymer work function or morphology. Interfacial chemical reactions control the energy level alignment, rather than just the pristine substrate work function.
Bibliography:The authors thank Dr. K. Reuter (H. C. Starck, Leverkusen) for kindly providing PEDT-S and helpful discussions. The synchrotron work was supported by the IHP-Contract HPRI-CT-1999-00040 of the European Commission. We thank Prof. J.-J. Pireaux and Dr. J. Ghijsen for providing experimental equipment.
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ArticleID:ADMA200400697
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The authors thank Dr. K. Reuter (H. C. Starck, Leverkusen) for kindly providing PEDT‐S and helpful discussions. The synchrotron work was supported by the IHP‐Contract HPRI‐CT‐1999‐00040 of the European Commission. We thank Prof. J.‐J. Pireaux and Dr. J. Ghijsen for providing experimental equipment.
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ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200400697