کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10155991 | 1666369 | 2019 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Yb3+/Er3+ co-doped Lu2TeO6 nanophosphors: Hydrothermal synthesis, upconversion luminescence and highly sensitive temperature sensing performance
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Upconversion (UC) nanophosphors of Lu2TeO6:Yb3+/Er3+ as temperature sensing material have been successfully synthesized via hydrothermal method followed by a subsequent heat treatment process. The phase and micrographs of the as-prepared phosphors were characterized by XRD, SEM, and TEM. Results indicate that the phosphors of hexagonal Lu2TeO6:Yb3+/Er3+, formed after heat-treatment at 800â¯Â°C for 5â¯h, consist of rice-like nanoparticles with size mostly distributed less than 200â¯nm in length. Under the 980-nm NIR excitation, the tellurite nanophosphors exhibit strong green and red UC emissions. The optimum Yb3+ and Er3+ concentrations for UC luminescence are determined to be 10% and 1%, respectively. The possible energy transfer mechanism implicated in the nanophosphors is discussed based on the pump power dependence of UC emissions. Furthermore, temperature sensing ability of Lu2TeO6:Yb3+/Er3+ (10/1) is investigated by employing the temperature dependent fluorescence intensity ratio (FIR) of two emission bands (2H11/2/4S3/2â¯ââ¯4I15/2) of Er3+ ion. The maximum sensitivity achieved in this developed material is as high as 0.0103â¯Kâ1â¯at 623â¯K. This work provides a new qualified UC nanomaterial for application in optical remote temperature sensing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 772, 25 January 2019, Pages 525-531
Journal: Journal of Alloys and Compounds - Volume 772, 25 January 2019, Pages 525-531
نویسندگان
Zhili Ma, Jie Gou, Yu Zhang, Yuhong Man, Guannan Li, Chunmei Li, Jianfeng Tang,