CoPc and CoPcF16 on gold: Site-specific charge-transfer processes

被引：32

作者：

Petraki, Fotini ^{[1
]}

Peisert, Heiko ^{[1
]}

Uihlein, Johannes ^{[1
]}

Ayguel, Umut ^{[1
]}

Chasse, Thomas ^{[1
]}

机构：

[1] Univ Tubingen, Inst Phys & Theoret Chem, D-72076 Tubingen, Germany

来源：

BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2014年 / 5卷

关键词：

Auger parameter; charge transfer; interfaces; organic semiconductors; photoemission; phthalocyanines; polarization screening; ELECTRONIC-STRUCTURE; PHOTOELECTRON-SPECTROSCOPY; PHOTOEMISSION-SPECTROSCOPY; INTERFACE PROPERTIES; PHTHALOCYANINES; AG(111); ADSORPTION; TRANSPORT; AU(100); COBALT;

D O I：

10.3762/bjnano.5.61

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Interface properties of cobalt(II) phthalocyanine (CoPc) and cobalt(II) hexadecafluoro-phthalocyanine (CoPcF16) to gold are investigated by photo-excited electron spectroscopies (X-ray photoemission spectroscopy (XPS), ultraviolet photoemission spectroscopy (UPS) and X-ray excited Auger electron spectroscopy (XAES)). It is shown that a bidirectional charge transfer determines the interface energetics for CoPc and CoPcF16 on Au. Combined XPS and XAES measurements allow for the separation of chemical shifts based on different local charges at the considered atom caused by polarization effects. This facilitates a detailed discussion of energetic shifts of core level spectra. The data allow the discussion of site-specific charge-transfer processes.

引用

页码：524 / 531

页数：8

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