کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10643213 | 998207 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solar preparation of SiOx (x â 1) nanopowders from silicon vaporisation on a ZrO2 pellet. XPS and photoluminescence characterisation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
SiOx nanoparticles were prepared by vaporisation and condensation of melted silicon droplets put on zirconia pellets in a solar reactor at the focus of a 2 kW solar furnace. The size of the grains were nanometric, generally included in the range 20-40 nm, and the O/Si atomic ratio values were close to stoichiometry (O/Si â 1 ± 0.2). XPS, DRX and TEM analyses show that these nanoparticles are amorphous with various silicon chemical environments which can be described as constituted with polysubstituted Si-(O4ânSin) tetrahedral configurations. The estimated oxygen atomic concentrations for these nanoparticles was in good agreement with thermodynamic equilibrium calculations for the system ZrO2-Si at high temperature. The predominant gaseous species is the SiO molecule. The SiOx nanoparticles present photoluminescence property similar to those currently reported for electrolytic porous silicon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 78, Issue 6, June 2005, Pages 763-771
Journal: Solar Energy - Volume 78, Issue 6, June 2005, Pages 763-771
نویسندگان
F. Teixeira, R. Berjoan, G. Peraudeau, D. Perarnau,