کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8002117 | 1516314 | 2013 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cooperative downconversion and near-infrared luminescence of Tb3+/Yb3+ co-doped tellurite glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
The different concentration of Tb3+/Yb3+ co-doped tellurite glasses were prepared by high-temperature melting-quenching method. The near-infrared (NIR) luminescence of co-doped samples upon the excitation of Tb3+ ions with a green visible photon at 484 nm was investigated, and two NIR photons could be emitted by Yb3+ (2F5/2 â 2F7/2) through cooperative energy transfer from Tb3+ to two Yb3+ ions. On the other hand, the Yb3+ co-doped concentration dependence on the visible and NIR emissions, decay lifetimes and quantum efficiencies from the downconversion have been studied. The NIR quantum efficiency achieved 172% before the concentration quenching threshold.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 579, 5 December 2013, Pages 27-30
Journal: Journal of Alloys and Compounds - Volume 579, 5 December 2013, Pages 27-30
نویسندگان
Xianju Zhou, Yongjie Wang, Guangchuan Wang, Li Li, Kaining Zhou, Qingxu Li,