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Eu3+, Tb3+- and Er3+, Yb3+-Doped ?-MoO3 Nanosheets for Optical Luminescent Thermometry.

ABSTRACT: Here we report a novel synthesis approach for the preparation of ?-MoO3:Ln3+ materials employing a two-step synthesis. Additionally, in this work the ?-MoO3:Ln3+ materials are reported as potential optical thermometers for the first time. In this synthesis approach, first MoS2 2D nanosheets were prepared, which were further heat treated to obtain ?-MoO3. These materials were fully characterized by powder X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray fluorescence (XRF), thermogravimetry (TG) and differential thermal analysis (DTA), transmission electron microscopy (TEM), and luminescence spectroscopy. Temperature-dependent luminescence measurements were carried out to determine the optical thermometric properties of two different types of ?-MoO3:Ln3+ materials (Eu3+/Tb3+ downshifting and Er3+/Yb3+ upconversion luminescence systems). We demonstrate in this study that this class of material could be a potential candidate for temperature-sensing applications.

SUBMITTER: Liu J 

PROVIDER: S-EPMC6524054 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Eu<sup>3+</sup>, Tb<sup>3+</sup>- and Er<sup>3+</sup>, Yb<sup>3+</sup>-Doped α-MoO<sub>3</sub> Nanosheets for Optical Luminescent Thermometry.

Liu Jing J   Van Deun Rik R   Kaczmarek Anna M AM  

Nanomaterials (Basel, Switzerland) 20190421 4

Here we report a novel synthesis approach for the preparation of α-MoO<sub>3</sub>:Ln<sup>3+</sup> materials employing a two-step synthesis. Additionally, in this work the α-MoO<sub>3</sub>:Ln<sup>3+</sup> materials are reported as potential optical thermometers for the first time. In this synthesis approach, first MoS<sub>2</sub> 2D nanosheets were prepared, which were further heat treated to obtain α-MoO<sub>3</sub>. These materials were fully characterized by powder X-ray diffraction (XRD), R  ...[more]

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