کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402607 | 1392738 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of hydrogenation on the structure and visible photoluminescence of germanium oxide thin films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Substoichiometric germanium oxide thin films were prepared by evaporation of GeO2 powder. The as-deposited samples showed a luminescence band in the visible range. Hydrogen was used to passivate the dangling bond defects and therefore to determine the origin of photoluminescence in the germanium oxide films. Hydrogen was introduced in the films from an electron cyclotron resonance (ECR) plasma source during or after the evaporation. The films hydrogenated during evaporation contain little oxygen because of an etching mechanism. In the post-hydrogenated films, the oxygen content is higher. With the hydrogenation treatment, the oxygen dangling bonds are suppressed. It is proposed that the photoluminescence in the visible range is attributed to the structural defects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 7, July 2009, Pages 729-733
Journal: Journal of Luminescence - Volume 129, Issue 7, July 2009, Pages 729-733
نویسندگان
M. Ardyanian, H. Rinnert, M. Vergnat,