کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5448953 | 1512516 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical temperature sensing behavior of Er3+/Yb3+/Tm3+:Y2O3 nanoparticles based on thermally and non-thermally coupled levels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Er3+/Yb3+/Tm3+ triply doped Y2O3 nanoparticles have been synthesized by solute combustion method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) demonstrate that the prepared particles are cubic Y2O3 phase with the average size of â¼49 nm. The blue (Tm3+: 1G4â3H6), green (Er3+: 2H11â2, 4S3â2â4I15â2) and red (Er3+: 4F9â2â4I15â2) upconversion (UC) emissions are observed upon a 980 nm excitation. Applying the fluorescence intensity ratio (FIR) technique, the optical temperature sensing behaviors are studied based on thermally coupled levels (2H11â2 and 4S3â2 of Er3+) and non-thermally coupled levels (1G4(b) (Tm3+) and 2H11â2 (Er3+)), respectively. The results show that the absolute sensing sensitivity is much higher in the entire experimental temperature range, when the non-thermally coupled levels with different temperature dependences (1G4(b) (Tm3+) and 2H11â2 (Er3+)) are selected as the thermometric index. The maximum absolute sensitivity is found to be as high as â¼1640Ã10â4 Kâ1 at 573 K. This demonstrates that an optical temperature sensor with high performance can be designed based on the Er3+/Yb3+/Tm3+:Y2O3 nanoparticles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 407, 15 January 2018, Pages 57-62
Journal: Optics Communications - Volume 407, 15 January 2018, Pages 57-62
نویسندگان
Guangrun Chen, Ruoshan Lei, Feifei Huang, Huanping Wang, Shilong Zhao, Shiqing Xu,