کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1680526 1518667 2015 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of helium interstitials aggregation in silicon: Why bubbles formation by a self-trapping mechanism does not work
ترجمه فارسی عنوان
بررسی تجمع هیدرولیتیکهای هلیوم در سیلیکن: چرا شکل گیری حبابها توسط مکانیسم خودپیمایی کار نمی کند
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
چکیده انگلیسی

First-principles calculations of the aggregation of helium interstitials in silicon have been performed to determine whether the first steps of helium-filled bubbles formation could occur by a self-trapping mechanism. These simulations show that the interaction between helium interstitials is repulsive, of low magnitude, and that this effect will saturate for a large number of interstitials. Considering the relaxation of the computational cell only leads to a small reduction of the binding energy. These results imply that the aggregation of interstitial helium atoms is highly unlikely in silicon, which allowed us to conclude that a self-trapping mechanism can not occur, and that an initial amount of vacancies is required for helium-filled bubbles formation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 352, 1 June 2015, Pages 152–155
نویسندگان
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