Site-specific polarization screening in organic thin films.
Site-specific polarization screening in organic thin films.
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有机薄膜中的位点特异性偏振筛选。
DOI：
10.1103/physrevlett.102.177405
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发表时间：
2009
影响因子：
8.6
通讯作者：
F. Tautz
中科院分区：
文献类型：
--
作者：
S. Soubatch;C. Weiss;R. Temirov;F. Tautz
利用扫描隧道显微镜对高度有序的四苯分子半导体薄膜中的亲和能级进行了系统的局域光谱分析，发现分子间的能级移动高达约1.0 eV。这种终态效应可以追溯到具有复杂晶胞的有机材料中极化能的位置特异性，这是由不同的分子环境、固有的各向异性分子极化率以及底物的影响共同引起的。
Systematic local spectroscopy of the affinity levels, by means of a scanning tunneling microscope, in highly ordered molecular semiconductor films of tetracene reveals strong energy level shifts by up to approximately 1.0 eV from molecule to molecule. This final state effect can be traced back to the site specificity of the polarization energy in organic materials with complex unit cells, caused by a combination of different molecular environments, the intrinsically anisotropic molecular polarizability, and the influence of the substrate.