کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7993379 | 1516152 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical temperature sensing properties of KLu2F7: Yb3+/Er3+/Nd3+ nanoparticles under NIR excitation
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Yb3+/Er3+/Nd3+ tri-doped KLu2F7 nanoparticles were fabricated via a typical co-precipitation method, and their phase structure, up-conversion (UC) emission and temperature sensing properties have been investigated in this work. An intense UC green emission originated from Er3+ ions is observed under the near infra-red (NIR) excitation. The maximum sensitivity of temperature is approximately 0.0044â¯Kâ1â¯at 533â¯K and 0.0041â¯Kâ1â¯at 413â¯K under the excitation of 980 and 808â¯nm, respectively. Meanwhile, KLu2F7: Yb3+/Er3+/Nd3+ nanoparticles exhibit excellent thermal stability under the NIR excitation. However, the thermal effect induced by 808â¯nm laser excitation is negligible compared with that of induced by 980â¯nm excitation, especially under a high pump power density excitation. It indicates that the employment of 808â¯nm excitation on KLu2F7: Yb3+/Er3+/Nd3+ system circumvents the laser-induced thermal effect as well as improves the accuracy of temperature sensing. Thus, it was proved that these nanoparticles provide a potential multifunctional application as thermometers and biosensors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 742, 25 April 2018, Pages 497-503
Journal: Journal of Alloys and Compounds - Volume 742, 25 April 2018, Pages 497-503
نویسندگان
Yushuang Qi, Sai Li, Qiuhong Min, Wei Lu, Xuhui Xu, Dacheng Zhou, Jianbei Qiu, Lingli Wang, Xue Yu,