کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1882915 1533497 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural and defects induced phenomena in γ-rays irradiated 6H-SiC
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
Structural and defects induced phenomena in γ-rays irradiated 6H-SiC
چکیده انگلیسی


• No formation of others SiC polytypes.
• The gamma rays irradiation has induced a slight surface amorphization.
• A re-crystallization at lower and higher doses is noticed.
• Larger doses induced a substantial internal stress.

Damages and/or defects induced by γ-rays irradiation on 6H-SiC single crystals in channeled configuration towards 〈006〉/〈0012〉 crystallographic directions are reported in the range of 0–1200 kGy. Atomic force microscopy, X-rays diffraction, Raman and photoluminescence investigations were used to obtain a comprehensive set of informations on the nature and population distribution of the induced defects. Primarily, there was no carbon clusterization upon γ-rays irradiation and hence no formation of others SiC polytypes. In contrast, the γ-rays irradiation has induced an increase of the surface roughness at higher doses, which indicates a structural degradation. Larger doses induced an emergence of deeper shallow traps at energies greater than 350 meV below the bandgap.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 127, October 2016, Pages 169–176
نویسندگان
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