Adsorption of 1-octanethiol on the GaN(0001) surface

被引:33
作者
Bermudez, VM [1 ]
机构
[1] USN, Res Lab, Washington, DC 20375 USA
关键词
D O I
10.1021/la030032a
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The chemisorption of 1-octanethiol [CH3(CH2)(6)CH2SH] from the vapor phase on the GaN(0001)-(1 x 1) surface has been studied using X-ray photoemission, ultraviolet photoemission, and X-ray-excited Auger electron spectroscopies. Quantitative analysis of relative peak intensities indicates that the molecule adsorbs via the thiol group with a saturation coverage of similar to0.28 monolayers and with the alkyl chain lying essentially parallel to the surface. Upon annealing, most of the alkyl C desorbs by similar to350 degreesC, but most of the S remains. Little or no indication of X-ray-induced damage in the adsorbed thiol layer is seen during data collection.
引用
收藏
页码:6813 / 6819
页数:7
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