Dissociative adsorption of methyl chloride on Si(001) studied by scanning tunneling microscopy

被引：7
|
作者：
Woelke, A [1 ]
Imanaka, S [1 ]
Watanabe, S [1 ]
Goto, S [1 ]
Hashinokuchi, M [1 ]
Okada, M [1 ]
Kasai, T [1 ]
机构：
[1] Osaka Univ, Grad Sch Sci, Dept Chem, Toyonaka, Osaka 5600043, Japan
来源：
JOURNAL OF ELECTRON MICROSCOPY | 2005年 / 54卷
关键词：
methyl chloride; Si(001); dissociative adsorption; STM; molecular beam;
D O I：
10.1093/jmicro/dfi010
中图分类号：
TH742 [显微镜];
学科分类号：
摘要：
Chemical reactions of methyl chloride (CH3Cl) on a clean Si(001) surface at similar to 300 K are studied by means of scanning tunneling microscopy (STM) under ultra-high-vacuum conditions. The features appearing in the STM images are identified with the possible products of dissociated CH3 and Cl, and their distribution is also evaluated as well as the development of their distribution with increasing CH3Cl doses. The amount of Cl atoms found on the surface is approximately twice as large as that of the CH3 molecules. This leads to the conclusion that dissociative adsorption of CH3Cl on Si occurs in different processes: CH3Cl(precursor) -> CH3(ad) + Cl-(ad) and CH3Cl(precursor) -> CH3(gas) + Cl-(ad).
引用
收藏
页码：I21 / I24
页数：4
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