کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5488956 1399591 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High sensitivity thermometry and optical heating Bi-function of Yb3+/Tm3+ Co-doped BaGd2ZnO5 phosphors
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
High sensitivity thermometry and optical heating Bi-function of Yb3+/Tm3+ Co-doped BaGd2ZnO5 phosphors
چکیده انگلیسی
Yb3+/Tm3+ co-doped BaGd2ZnO5 phosphors have been effectively synthesized by traditional sol-gel method. The graph of X-ray diffraction (XRD) exhibited that the obtained phosphors were pure orthorhombic phase. The morphology and composition of the samples were obtained by field emission-scanning electron microscope (FE-SEM) and the energy dispersive spectrometry (EDS). From upconversion luminance (UCL) emission spectra, the two strong blue emissions were obviously observed at 478 and 485 nm under the excitation of 980 nm. The possible energy diagram and UC mechanism were explained in detail. Optical temperature (T) sensing performances were evaluated in the temperature ranging 313 K - 573 K. And the highest sensor sensitivity calculated was 0.0055 K−1 at 323 K. Additionally, the laser excitation heating effect was also explored. The results indicated that Yb3+/Tm3+ co-doped BaGd2ZnO5 phosphors could be applied on optical temperature sensors and optical heater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 17, Issue 2, February 2017, Pages 255-261
نویسندگان
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