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首页> 外文期刊>Physical review >Electronic structure of ultrathin heteromolecular organic-metal interfaces: SnPc/PTCDA/Ag(111)and SnPc/Ag(111)
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Electronic structure of ultrathin heteromolecular organic-metal interfaces: SnPc/PTCDA/Ag(111)and SnPc/Ag(111)

机译：超薄异分子有机金属界面的电子结构：SnPc / PTCDA / Ag（111）和SnPc / Ag（111）

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摘要

The SnPc/PTCDA/Ag(111) heteromolecular interface and the SnPc/Ag(111) interface are studied by photoelectron spectroscopy of the core-level and the valence regime as well as by work-function measurements. Accordingly, the interaction between the first and the second adsorbate monolayer is comparatively weak and noncovalent in contrast to what is found for the interaction between the substrate and the first adsorbate layer. Furthermore, a rigid level shift is observed for the SnPc spectra of the heteromolecular film, which decreases with increasing SnPc coverage, similar to what is known for Schottky contacts. It will be demonstrated that the built-in electric field at the interface can be explained by the formation of an interface dipole, which extends over several adsorbate monolayers. Moreover, the comparison with the SnPc/Ag(111) film suggests that the interface dipole can be altered by the interlayer.
机译：SnPc / PTCDA / Ag（111）异分子界面和SnPc / Ag（111）界面是通过光电子能谱对原子能级和价态以及功函数测量进行研究的。因此，与在基底和第一吸附物层之间的相互作用中发现的相反，第一和第二吸附物单层之间的相互作用相对较弱并且是非共价的。此外，对于异分子膜的SnPc光谱观察到刚性能级位移，该位移随SnPc覆盖率的增加而减小，这类似于肖特基接触。将证明，界面处的内置电场可以通过界面偶极子的形成来解释，该偶极子在数个吸附物单分子层上延伸。此外，与SnPc / Ag（111）薄膜的比较表明，界面偶极子可以被中间层改变。

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  • 来源
    《Physical review》 |2010年第23期|p.885-894|共10页
  • 作者

    M. Haeming; M. Greif; C. Sauer; A. Scholl; F. Reinert;

  • 作者单位

    Experimentelle Physik Ⅲ und Roentgen Research Center for Complex Materials (RCCM), Universitaet Wuerzburg,97074 Wurzburg, Germany;

    Experimentelle Physik Ⅲ und Roentgen Research Center for Complex Materials (RCCM), Universitaet Wuerzburg,97074 Wurzburg, Germany;

    Experimentelle Physik Ⅲ und Roentgen Research Center for Complex Materials (RCCM), Universitaet Wuerzburg,97074 Wurzburg, Germany;

    Experimentelle Physik Ⅲ und Roentgen Research Center for Complex Materials (RCCM), Universitaet Wuerzburg,97074 Wurzburg, Germany;

    Experimentelle Physik Ⅲ und Roentgen Research Center for Complex Materials (RCCM), Universitaet Wuerzburg,97074 Wurzburg, Germany,Karlsruher Institut fuer Technologie (KIT), Gemeinschaftslabor fuer Nanoanalytik, 76021 Karlsruhe, Germany;

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    79.60.dp; 73.20.at; 79.60.jv; 79.60.fr;

    机译：79.60.dp;73.20.at;79.60.jv;79.60.fr;

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