Open AccessColor-tunable upconversion photoluminescence and highly performed optical temperature sensing in Er^3+/Yb^3+ co-doped ZnWO_4
Author(s) -
XinSheng Chai,
Jun Li,
Xusheng Wang,
Yanxia Li,
Xi Yao
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.022438
Subject(s) - photoluminescence , materials science , phosphor , photon upconversion , monoclinic crystal system , doping , rietveld refinement , luminescence , optoelectronics , analytical chemistry (journal) , fluorescence , optics , atmospheric temperature range , crystal structure , diffraction , chemistry , crystallography , physics , chromatography , meteorology
Er 3+ /Yb 3+ co-doped ZnWO 4 phosphors were synthesized by a solid state reaction method and their structure, photoluminescence and temperature sensing properties were characterized. The color-tunable upconversion emissions (from green to red) were observed by increasing the doped Er 3+ /Yb 3+ concentration. The temperature sensing properties were studied by using the fluorescence intensity ratio technique in the temperature range of 83-583 K, and high performance was obtained. The maximum sensitivity is found to be 0.0099 K -1 at 583 K. The XRD Rietveld refinement revealed that the phosphors crystallized in monoclinic structure with the space group P2/c (13) at room temperature. The results suggest that the phosphors could be an exceptional choice for next generation luminescence-based temperature sensing devices as well as in multiple biolabels.