کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5426619 1395893 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reactions of atomic oxygen with the D-covered Si(1 0 0) surfaces
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Reactions of atomic oxygen with the D-covered Si(1 0 0) surfaces
چکیده انگلیسی

We have studied D abstraction by O on the D/Si(1 0 0) surfaces using a continuous as well as pulsed O-beams. Both D2 and D2O molecules are detected during O-exposure. The D2 desorption is found to take place more efficiently on the monodeuteride/dideuteride surface than on the monodeuteride surface. The pulsed beam experiments exhibit occurrence of both a slow and a fast D2 desorption. The D2 desorption is found to obey the second-order rate law in θD0 on the monodeuteride surfaces and 3.5th-order rate law on the monodeuteride/dideuteride surfaces. The D2O desorption is found to be governed also by the second-order rate law, however regardless of D coverage even on the monodeuteride/dideuteride surfaces. Possible mechanisms for the O-induced desorption from the D/Si(1 0 0) surfaces are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 601, Issue 14, 15 July 2007, Pages 2924-2930
نویسندگان
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