Fermi level pinning by integer charge transfer at electrode-organic semiconductor interfaces

Menno Bokdam, Deniz Cakir, G. Brocks

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37 Citations (Scopus)

Abstract

The atomic structure of interfaces between conducting electrodes and molecular organic materials varies considerably. Yet experiments show that pinning of the Fermi level, which is observed at such interfaces, does not depend upon the structural details. In this letter, we develop a general model to explain Fermi level pinning, and formulate simple expressions for the pinning levels, based upon integer charge transfer between the conductor and the molecular layer. In particular, we show that DFT calculations give good values for the pinning levels.
Original languageUndefined
Pages (from-to)113303/1-113303/3
Number of pages3
JournalApplied physics letters
Volume98
Issue number113303
DOIs
Publication statusPublished - 2011

Keywords

  • IR-104426
  • METIS-280022

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