کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990020 | 1516125 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Upconversion properties and temperature sensing behaviors in visible and near-infrared region based on fluorescence intensity ratio in LuVO4: Yb3+/Er3+
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A high temperature solid state method was used to synthesize the Yb3+ and Er3+ codoped LuVO4. The efficient energy transfer (ET) processes from Yb3+ to Er3+ has been demonstrated by upconversion (UC) spectra, near-infrared (NIR) spectra and lifetime curves. The optimal doping concentration for Yb3+ and Er3+ is 20â¯mol % and 2â¯mol %, respectively. Meanwhile, the temperature sensing behaviors in visible and NIR region based on fluorescence intensity ratio (FIR) have been explored in detail. In visible region, the optical thermometry of LuVO4: Yb3+/Er3+ is investigated via the FIR of the two thermally coupled energy levels 2H11/2 and 4S3/2 of Er3+, accompanying with a maximal absolute sensitivity SA of 0.82% Kâ1 at 423â¯K. In NIR region, the FIRs of Peak 1 (located at 1595â¯nm) to Peak 3 (located at 1660â¯nm) and Peak 2 (located at 1637â¯nm) to Peak 3, which are all assigned to 4I13/2â¯ââ¯4I15/2 transition of Er3+, can be well fitted related to the temperature, with the maximal SA of 1.85% Kâ1 and 0.62% Kâ1 respectively. All the results suggest that LuVO4: Yb3+/Er3+ powders is a potential material for optical thermometry in both visible and NIR region based on FIR.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 769, 15 November 2018, Pages 325-331
Journal: Journal of Alloys and Compounds - Volume 769, 15 November 2018, Pages 325-331
نویسندگان
Yan Ma, Guotao Xiang, Jiahua Zhang, Zhen Liu, Pan Zhou, Wen Liu, Xiao Tang, Sha Jiang, Xianju Zhou, Li Li, Yongshi Luo, Ye Jin,