کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9817780 1518771 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of implantation energy and annealing temperature on the structural evolution of Ge+-implanted amorphous Si
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Effects of implantation energy and annealing temperature on the structural evolution of Ge+-implanted amorphous Si
چکیده انگلیسی
High-resolution transmission electron microscopy in conjunction with autocorrelation function analysis have been applied to investigate the evolution of structural order in Ge+-preamorphized silicon layers. (0 0 1)Si wafers were preamorphized with 5 and 10 keV Ge+ to a dose of 5 × 1015 ions/cm2. A higher density of embedded nanocrystallites was found to be present in as-implanted amorphous Si layer for 10 keV Ge+ than that for 5 keV Ge+. The densities of embedded nanocrystallites in Ge+-preamorphized Si layer with 5 and 10 keV Ge+ were found to diminish with annealing temperature first then increase. The effects of ion-implantation energy and annealing temperature on the structural evolution in Ge+-implanted amorphous Si are discussed in terms of ion-beam induced annealing and free energy change of the system. The depth dependence on the density of embedded nanocrystallites is attributed to the nonuniform distribution of Ge atoms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 237, Issues 1–2, August 2005, Pages 384-389
نویسندگان
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