کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1816691 | 1525270 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ observation of iron atoms in multicrystalline silicon at 1273 and 300Â K by Mössbauer spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
57Fe Mössbauer absorber experiments are performed at 1273 and 300 K on two different samples of multicrystalline Si (mc-Si), whose minority carrier lifetimes are 41 and 1.5 μs, respectively. The samples are deposited with 1.5 nm 57Fe, and are annealed and measured simultaneously at 1273 K for 1 week. The spectra consist of four singlets at 1273 K, and of three singlets at 300 K. Comparing the present results with those from 57Fe-deposited CZ-Si single crystal, the 57Fe atoms are found to exist in the mc-Si matrix dominantly as substitutional Fe atoms and different Fe-defect clusters, but not as FeSi2 precipitates. One of the components at 1273 K, which yields an isomer shift of 1.1 mm sâ1, appears to be due to interstitial Fe atoms trapped on defects. The fraction depends clearly on the minority carrier lifetime, and therefore, on the quality of the mc-Si samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volumes 376â377, 1 April 2006, Pages 227-230
Journal: Physica B: Condensed Matter - Volumes 376â377, 1 April 2006, Pages 227-230
نویسندگان
Y. Yoshida, S. Horie, K. Niira, K. Fukui, K. Shirasawa,