Barrier formation at organic interfaces in a Cu(100)-benzenethiolate-pentacene heterostructure

被引：65

作者：

Betti, M. G. ^{[1
]}

Kanjilal, A. ^{[1
,2
]}

Mariani, C. ^{[1
]}

Vazquez, H. ^{[3
,4
]}

Dappe, Y. J. ^{[3
]}

Ortega, J. ^{[3
]}

Flores, F. ^{[3
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] CNR, INFM, Ctr NanoStruct & BioSyst Surfaces S3, I-41100 Modena, Italy

[3] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain

[4] Tech Univ Denmark, MIC Dept Micro & Nanotechnol, DK-2800 Lyngby, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.100.027601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The energy level alignment at the metal-organic and organic-organic interfaces of the Cu(100)/benzenethiolate/pentacene heterostructure is studied by photoemission spectroscopy and discussed theoretically using a model that includes, in a consistent way, charge transfer, Pauli repulsion, intrinsic molecular dipoles, and interface screening as a function of coverage. Despite the different nature of the two interfaces, our model provides a unified explanation for the work-function changes at both junctions and enables us to determine the benzenethiolate orientation as a function of coverage.

引用

页数：4

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