Thermally activated dewetting of organic thin films: the case of pentacene on SiO2 and gold

被引：64

作者：

Kaefer, D. ^{[2
]}

Woell, C. ^{[2
]}

Witte, G. ^{[1
,2
]}

机构：

[1] Univ Marburg, D-35032 Marburg, Germany

[2] Ruhr Univ Bochum, D-44780 Bochum, Germany

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 95卷 / 01期

关键词：

EPITAXIAL-GROWTH; EVAPORATED PENTACENE; AROMATIC-MOLECULES; VAPOR-PRESSURES; HIGH-MOBILITY; MORPHOLOGY; TRANSISTORS; DESORPTION; ENTHALPIES; DEPOSITION;

D O I：

10.1007/s00339-008-5011-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The morphology of pentacene organic thin films deposited on SiO2 and Au(111) surfaces using organic molecular beam deposition (OMBD) has been characterized by a multi-technique approach. Among the techniques applied were X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM) and thermal desorption spectroscopy (TDS). Our rather detailed studies reveal that on both substrates the growth is strongly influenced by dewetting and islanding phenomena, yielding very rough surfaces. Surprisingly, substantial changes in the morphology were observed also after deposition on room-temperature samples on a time scale of several hours. The rather extensive set of in situ XPS data was analyzed in the framework of a simple model, which allows us to derive rather detailed information on the roughness parameters.

引用

页码：273 / 284

页数：12

共 69 条

[31] Pentacene thin film transistors on inorganic dielectrics:: Morphology, structural properties, and electronic transport [J].