SCANNING-TUNNELING-MICROSCOPY OF THE REACTION OF NH3 WITH GAAS(110)

被引：7

作者：

BROWN, G

WEIMER, M

机构：

[1] Texas A&M Univ, College Station

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 1995年 / 13卷 / 04期

关键词：

D O I：

10.1116/1.587877

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The room temperature chemisorption of gaseous NH3 on p-type GaAs(110) has been studied with scanning tunneling microscopy (STM). Atomic-resolution images confirm that the reaction is nondissociative and occurs between lone-pair electrons of the free molecule and cation dangling bonds at the surface. Because the adsorption complex is uncharged, the microscopic dipole screening produced by a single, tilted ammonia molecule is directly observed. The results agree completely with the predictions of Lewis acid-base chemistry. (C) 1995 American Vacuum Society.

引用

页码：1679 / 1683

页数：5

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