Electrical Transport Properties of Oligothiophene-Based Molecular Films Studied by Current Sensing Atomic Force Microscopy

被引：32

作者：

Hendriksen, Bas L. M. ^{[1
]}

Martin, Florent ^{[1
,2
]}

Qi, Yabing ^{[1
]}

Mauldin, Clayton ^{[3
]}

Vukmirovic, Nenad ^{[1
]}

Ren, JunFeng ^{[1
,4
]}

Wormeester, Herbert ^{[5
]}

Katan, Allard J. ^{[1
]}

Altoe, Virginia ^{[6
]}

Aloni, Shaul ^{[6
]}

Frechet, Jean M. J. ^{[3
]}

Wang, Lin-Wang ^{[1
]}

Salmeron, Miguel ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[4] Shandong Normal Univ, Coll Phys & Elect, Jinan 250014, Peoples R China

[5] Univ Twente, Fac Sci & Technol, MESA Inst Nanotochnol, NL-7500 AE Enschede, Netherlands

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Mol Foundry, Berkeley, CA 94720 USA

来源：

NANO LETTERS | 2011年 / 11卷 / 10期

关键词：

Oligothiophene; Langmuir-Blodgett monolayer; current sensing atomic force microscopy; molecular electronics; conduction anisotropy; lateral transport; SELF-ASSEMBLED MONOLAYERS; ELECTRONICS; TRANSISTORS; JUNCTIONS; FRICTION; FIELD; RECTIFIERS; RESISTANCE; INTERFACE; ALKANE;

D O I：

10.1021/nl202720y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Using conducting probe atomic force microscopy (CAFM) we have investigated the electrical conduction properties of monolayer films of a pentathiophene derivative on a SiO(2)/Si-p+ substrate. By a combination of current voltage spectroscopy and current imaging we show that lateral charge transport takes place in the plane of the monolayer via hole injection into the highest occupied molecular orbitals of the pentathiophene unit. Our CAFM data suggest that the conductivity is anisotropic relative to the crystalline directions of the molecular lattice.

引用

页码：4107 / 4112

页数：6

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