کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5441236 | 1510382 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Broadband infrared luminescence in Bi-doped silicate glass
ترجمه فارسی عنوان
لومنسانس مادون قرمز باند پهن در شیشه های سیلیکات بی دوپرد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Glasses having composition (0.5-5)Bi2O3-40SiO2-40CaO-20MgO were synthesized by the conventional melt quenching technique. The amorphous nature of the glasses was confirmed by XRD studies. Absorption, transmittance, fluorescence, and XPS spectra were measured. Heavily Bi-doped (Bi ions up to 8Â mol%) SiO2-CaO-MgO glass can exhibit broadband NIR (Near-infrared) emission at about 1245Â nm (under 808Â nm excitation), and the FWHM (Full Width at Half Maximum) reach up to 300Â nm. The measured fluorescent lifetime is several hundred microseconds. The XPS measurements of the Bi 4f region and decay time detection for the glass samples reveal that the NIR emission should be related to lower valence Bi ions (Bi+). After the Bi-doped glass was annealed in air atmosphere, the amount of luminescent active ions decreased.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 464, 15 May 2017, Pages 34-38
Journal: Journal of Non-Crystalline Solids - Volume 464, 15 May 2017, Pages 34-38
نویسندگان
Pingsheng Yu, Liangbi Su, Wei Guo, Jun Xu,