NA-PROMOTED OXIDATION OF SI(111)

被引：27

作者：

BOISHIN, G

TIKHOV, M

SURNEV, L

机构：

[1] Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia

来源：

SURFACE SCIENCE | 1991年 / 257卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(91)90791-P

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：

The effect of Na on the oxidation of a Si(111)-7 x 7 surface has been studied by Auger electron spectroscopy (AES), electron energy loss spectroscopy (EELS), thermal programmed desorption (TPD), LEED and work-function measurements. Two modes of Na-promoted oxidation were used. It was found that the drastic increase of the initial oxygen adsorption rate, observed for sodium coverages, theta-Na, in the submonolayer coverage range was not accompanied by a parallel enhancement of the oxidation rate. Na-promoted oxidation of Si(111) occurred only for theta-Na > 0.5. The formation of NaO2 and the resulting oxidation of the Si surface was studied thoroughly.

引用

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页码：190 / 198

页数：9

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