کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7870738 | 1509190 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical and structural studies of silicon-enriched films obtained by dc-magnetron co-sputtering
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We present in this work preliminary studies concerning the optical characterization, by optical absorption, photoluminescence and Raman spectroscopies, of Si-enriched films into a SiO2 matrix as a function of the Si concentration. The Si-molar concentration dependence shows different characteristics for each one of the samples: low Si concentration samples (lower than 50Â mol% of silicon) showed, at room temperature, a low energy PL band around 1.6Â eV, whereas samples with higher concentration (>Â 50Â mol% of silicon) showed a PL band at 2.27Â eV. Raman spectra of the samples account for different characteristics: low Si concentration samples showed a contribution of the amorphous phase of SiO2, whereas for high Si concentration samples, a relaxation of the selection rules is observed. Discussion and analysis of the experimental results are presented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 27, Issues 5â8, September 2007, Pages 1074-1077
Journal: Materials Science and Engineering: C - Volume 27, Issues 5â8, September 2007, Pages 1074-1077
نویسندگان
J.R. Aguilar-Hernández, G. Monroy-RodrÃguez, M. Cárdenas-GarcÃa, G.S. Contreras-Puente,