کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402840 | 1392743 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancing fluorescence emission properties of Dy3+ doped in chalcogenide glass via very small compositional modifications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
It has been experimentally confirmed that the addition of very small amount, tantamount to â¼1Â mol%, of the group III elements (Ga or In) in combination with alkali halides (CsBr or RbBr) into chalcogenide Ge-As-S glass significantly improves the emission properties of Dy3+ dopant. Preferential location of Br in the first coordination shell of Dy3+, which occurs spontaneously during the vitrification process, is proposed to make Dy3+ experience different crystal fields, reduced phonon energy and modified local refractive index. This restructuring effect as a result of such minute compositional adjustments thus enhances the optical properties of rare earth elements embedded in chalcogenide glasses, while keeping their thermal properties unaltered.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 6, June 2009, Pages 620-623
Journal: Journal of Luminescence - Volume 129, Issue 6, June 2009, Pages 620-623
نویسندگان
Yong Gyu Choi,