The effect of oxygen exposure on pentacene electronic structure

A. Vollmer; O. D. Jurchescu; I. Arfaoui; I. Salzmann; T.T.M. Palstra; P. Rudolf; J. Niemax; J. Pflaum; J. P. Rabe; N. Koch

doi:10.1140/epje/i2005-10012-0

The effect of oxygen exposure on pentacene electronic structure

A. Vollmer^*, O. D. Jurchescu, I. Arfaoui, I. Salzmann, T.T.M. Palstra, P. Rudolf, J. Niemax, J. Pflaum, J. P. Rabe, N. Koch

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

105 Citations (Scopus)

Abstract

We use ultraviolet photoelectron spectroscopy to investigate the effect of oxygen and air exposure on the electronic structure of pentacene single crystals and thin films. It is found that O₂ and water do not react noticeably with pentacene, whereas singlet oxygen/ozone readily oxidize the organic compound. Also, we obtain no evidence for considerable p-type doping of pentacene by O₂ at low pressure. However, oxygen exposure lowers the hole injection barrier at the interface between Au and pentacene by 0.25 eV, presumably due to a modification of the Au surface properties.

Original language	English
Pages (from-to)	339-343
Number of pages	5
Journal	European physical journal E. Soft Matter
Volume	17
Issue number	3
DOIs	https://doi.org/10.1140/epje/i2005-10012-0
Publication status	Published - 1 Jul 2005
Externally published	Yes

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T1 - The effect of oxygen exposure on pentacene electronic structure

AU - Vollmer, A.

AU - Jurchescu, O. D.

AU - Arfaoui, I.

AU - Salzmann, I.

AU - Palstra, T.T.M.

AU - Rudolf, P.

AU - Niemax, J.

AU - Pflaum, J.

AU - Rabe, J. P.

AU - Koch, N.

PY - 2005/7/1

Y1 - 2005/7/1

N2 - We use ultraviolet photoelectron spectroscopy to investigate the effect of oxygen and air exposure on the electronic structure of pentacene single crystals and thin films. It is found that O2 and water do not react noticeably with pentacene, whereas singlet oxygen/ozone readily oxidize the organic compound. Also, we obtain no evidence for considerable p-type doping of pentacene by O2 at low pressure. However, oxygen exposure lowers the hole injection barrier at the interface between Au and pentacene by 0.25 eV, presumably due to a modification of the Au surface properties.

AB - We use ultraviolet photoelectron spectroscopy to investigate the effect of oxygen and air exposure on the electronic structure of pentacene single crystals and thin films. It is found that O2 and water do not react noticeably with pentacene, whereas singlet oxygen/ozone readily oxidize the organic compound. Also, we obtain no evidence for considerable p-type doping of pentacene by O2 at low pressure. However, oxygen exposure lowers the hole injection barrier at the interface between Au and pentacene by 0.25 eV, presumably due to a modification of the Au surface properties.

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SN - 1292-8941

VL - 17

SP - 339

EP - 343

JO - European physical journal E. Soft Matter

JF - European physical journal E. Soft Matter

IS - 3

ER -

The effect of oxygen exposure on pentacene electronic structure

Abstract

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