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The effect of oxygen exposure on pentacene electronic structure

被引：102
作者：
Vollmer, A
Jurchescu, OD
Arfaoui, I
Salzmann, I
Palstra, TTM
Rudolf, P
Niemax, J
Pflaum, J
Rabe, JP
Koch, N
机构：
[1] Berliner Elektronenspeicherring Gesellsch Synchro, D-12489 Berlin, Germany
[2] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands
[3] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany
[4] Univ Stuttgart, Inst Phys 3, D-70550 Stuttgart, Germany
来源：
EUROPEAN PHYSICAL JOURNAL E | 2005年 / 17卷 / 03期
关键词：
D O I：
10.1140/epje/i2005-10012-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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 O-2 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 O-2 at low pressure. However, oxygen exposure lowers the hole injection barrier at the interface between An and pentacene by 0.25 eV, presumably due to a modification of the An surface properties.
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收藏
页码：339 / 343
页数：5
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