Preparation and Characterization of Octadecanethiol Self-Assembled Monolayers on Indium Arsenide (100)

被引：24

作者：

Knoben, Wout ^{[1
]}

Brongersma, Sywert H. ^{[1
]}

Crego-Calama, Mercedes ^{[1
]}

机构：

[1] Holst Ctr IMEC, NL-5656 AE Eindhoven, Netherlands

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 42期

关键词：

RAY PHOTOELECTRON-SPECTROSCOPY; BARE SEMICONDUCTOR SURFACES; ORGANIZED MOLECULAR ASSEMBLIES; ATTENUATED TOTAL-REFLECTION; SULFUR-PASSIVATED INAS; ELECTRONIC-PROPERTIES; INP SURFACES; GAAS; GOLD; SI;

D O I：

10.1021/jp9069543

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Self-assembled monolayers (SAMs) of octadecanethiol (ODT) on InAs(100) were prepared and characterized in detail. The native oxide of InAs was removed by a wet chemical etching method which allows formation of ODT SAMs on bare InAs(100) without any exposure to the ambient atmosphere. Contact angle measurement, ellipsometry, Fourier transform infrared spectroscopy, and atomic force microscopy show that the resulting SAMs are smooth, continuous, and, well ordered. X-ray photoelectron spectroscopy confirm bonding, of ODT to the substrate as thlolate. When InAs-ODT is exposed to the ambient atmosphere, some reoxidation of the substrate. takes place Thermal stability studies demonstrate that ODT SAMs ire completely stable up to 140 degrees C, Decomposition of ODT occurs above 250 degrees C.

引用

页码：18331 / 18340

页数：10

共 63 条

[1] SPONTANEOUSLY ORGANIZED MOLECULAR ASSEMBLIES .2. QUANTITATIVE INFRARED SPECTROSCOPIC DETERMINATION OF EQUILIBRIUM STRUCTURES OF SOLUTION-ADSORBED NORMAL-ALKANOIC ACIDS ON AN OXIDIZED ALUMINUM SURFACE [J].