Influence of gas molecules on the charge carrier mobility in thin films of semiconducting perylene tetracarboxylic imides

被引：22

作者：

Graaf, Harald ^{[1
]}

Schlettwein, Derck

机构：

[1] Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany

[2] Univ Giessen, Inst Angew Phys, D-35392 Giessen, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2006年 / 100卷 / 12期

关键词：

CHEMICAL SUBSTITUTION; OXYGEN; N,N'-DIMETHYLPERYLENE-3,4,9,10-BISCARBOXIMIDE; CRYSTALLOCHROMY; TRANSISTORS; SPECTRA; ACETONE; SURFACE;

D O I：

10.1063/1.2374930

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin films (30 nm) of crystalline N,N'-dimethylperylene-3,4,9,10-biscarboximide (MePTCDI) or amorphous 1,6,7,12-tetrachloro-N,N'-dimethylperylene-3,4,9,10-biscarboximide (Cl4MePTCDI) were prepared by physical vapor deposition and characterized by conductivity and field effect measurements at pristine films and under increasing partial pressure of oxygen, ethanol, acetone, or n-butane. Changes in the conductivity of the films were observed. Field effect measurements served to differentiate between changes in the charge carrier mobility mu and changes of the charge carrier concentration n. mu was found to decrease significantly, whereas rather small changes were found in n. Gas molecules that diffused into the films changed mu at least ten times more efficiently than those molecules just adsorbed on the surface. (c) 2006 American Institute of Physics.

引用

页数：3

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