کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8943278 | 1645144 | 2019 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
xLiNbO3-(1-x)(K,Na)NbO3 ceramics: A new class of phosphors with tunable upconversion luminescence by external electric field and excellent optical temperature sensing property
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, Er3+-doped and Er3+/Yb3+-co-doped xLiNbO3-(1-x)(K,Na)NbO3 (xLN-(1-x)KNN) ferroelectric ceramics were synthesized by a solid state reaction process and the samples were found to exhibit tunable upconversion luminescence (UCL) under an external electric field as well as excellent optical temperature-sensing properties. By altering the polarization time, UCL intensity was effectively controlled under an external electric field. Furthermore, an optimal UCL was observed in a 0.4LN-0.6KNN:Er3+,3Yb3+ sample and its excellent optical temperature sensitivity (0.006â¯Kâ1â¯at 643â¯K) from 83 to 663â¯K was 131% higher than that of 0.4LN-0.6KNN:Er3+. These results suggested that xLN-(1-x)KNN ferroelectric ceramics were promising candidates for an opto-electronic integrator and optical temperature sensors with high sensitivity and broad temperature range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 770, 5 January 2019, Pages 214-221
Journal: Journal of Alloys and Compounds - Volume 770, 5 January 2019, Pages 214-221
نویسندگان
Ying Zhang, Xusheng Wang, Huihua Ye, Yongxiang Li, Xi Yao,