کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9761633 | 1498422 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photo-induced effects in Ge25Ga10S65 glasses studied by XPS and XAS
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photo-induced effects in Ge25Ga10S65 glasses studied by XPS and XAS Photo-induced effects in Ge25Ga10S65 glasses studied by XPS and XAS](/preview/png/9761633.png)
چکیده انگلیسی
The present paper focuses on the structural, electronic, and compositional properties of Ge25Ga10S65 glasses before and after UV illumination in air using X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) techniques. The XPS Ge 3d spectra reveal the existence of GeO bonds in the surface region of illuminated glass. In the case of this sample, XAS O K-edge spectra showed the formation of an enriched region of oxygen atoms in the glass bulk, indicating a different bonding structure of oxygen at the surface and in the bulk of the glass. Moreover, the structural changes that occur after UV illumination in the glass sample are identified as the formation of a homogeneous germanium oxide surface layer followed by an intermediary Ge25Ga10S65â yOz subsurface region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 176, Issues 15â16, 12 May 2005, Pages 1403-1409
Journal: Solid State Ionics - Volume 176, Issues 15â16, 12 May 2005, Pages 1403-1409
نویسندگان
P.N. Lisboa-Filho, V.R. Mastelaro, W.H. Schreiner, S.H. Messaddeq, M. Siu Li, Y. Messaddeq, P. Hammer, S.J.L. Ribeiro, P. Parent, C. Laffon,