کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1676455 | 1008997 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Initial reaction of HfO2 atomic layer deposition on silicon surfaces with different oxygen levels: A density functional theory study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
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چکیده انگلیسی
Density functional theory is employed to investigate atomic layer deposition mechanism of HfO2 on hydroxylated silicon surfaces with different oxygen levels. Calculations show that the surface bridged oxygen can enhance the adsorption of HfCl4 and weaken the adsorption of H2O. In addition, temperature effects on the chlorine loss has been discussed. In particular, two possible pathways for the second chlorine loss at low temperature are explored. However, both of them are limited at higher temperature for two main reasons: (a) the decrease in the number of surface hydroxyl sites and (b) the dehydroxylation of as-grown HfO2 surface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 515, Issue 11, 9 April 2007, Pages 4702-4708
Journal: Thin Solid Films - Volume 515, Issue 11, 9 April 2007, Pages 4702-4708
نویسندگان
Jie Ren, Feng-Yi Liu, Ya-Tong Zhang, David Wei Zhang,