کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7839728 | 1505859 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anti-Stokes excited Er3+/Yb3+ codoped oxyfluoride glass ceramic for luminescence thermometry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Anti-Stokes excited Er3+/Yb3+ codoped oxyfluoride glass ceramic for luminescence thermometry Anti-Stokes excited Er3+/Yb3+ codoped oxyfluoride glass ceramic for luminescence thermometry](/preview/png/7839728.png)
چکیده انگلیسی
Luminescent materials doping with rare earth ions have demonstrated the potentiality as sensitive thermometers in many fields. Nevertheless, the excitation lasers induced heating (LIH) effect, which is always involved in the thermometry process, significantly limits the measurement accuracy. In this work, the LIH effect is resolved in 1.064â¯Âµm continuous wave laser excited Er3+/Yb3+ codoped oxyfluoride glass ceramic. Through the fluorescence intensity ratio (FIR) technique, optical temperature sensing via the green upconversion luminescence from Er3+ ions was investigated. Thermally enhanced upconversion emissions were observed as the temperature was increased from 309 to 573â¯K. More importantly, the FIR was hardly influenced by changing the pumping power densities, indicating stable and accurate temperature sensing could be achieved by nonresonant excited Er3+/Yb3+ codoped oxyfluoride glass ceramic without the complications from laser induced thermal effect. Combining with the steady-state rate equations and temperature dependent luminescence decay curves, theoretical analysis was performed and the results illustrate that multi-phonon assisted anti-Stokes excitation process of Yb3+ plays a key role in the excellent sensing characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 203, November 2018, Pages 401-408
Journal: Journal of Luminescence - Volume 203, November 2018, Pages 401-408
نویسندگان
Wei Xu, Yuwei Hu, Zuwu Jin, Longjiang Zheng, Zhiguo Zhang, Wenwu Cao,