A photoelectron spectroscopy study of tunable charge injection barrier between metal/organic interface

Zheng Xu, Sheng Han Li, Liping Ma, Gang Li, Guanwen Yang, Yang Yang

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5 Citations (Scopus)

Abstract

Photoelectron spectroscopy has been used to investigate a tunable charge injection barrier at the metal/organic interface. Results in this study show that the morphology of the Al electrode in the indium tin oxide (ITO) LiFAl /pentacene structure plays a critical role. When the sample is biased across ITO and Al electrodes, shifts in the binding energies of certain core-level electrons are observed on the surface of the discontinuous thin Al electrode. In contrast, no such shifts are observed on the thick Al electrode. Further studies indicate that applying a voltage bias changes the energy alignment between the discontinuous thin Al electrode and the pentacene layer deposited on it.
Original languageEnglish
Article number023302
JournalApplied Physics Letters
Volume93
Issue number2
DOIs
Publication statusPublished - 14 Jul 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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