Energy transfer in single phase Eu3+-doped Y2WO6 phosphors

Llanos J.; Espinoza D.; Castillo R.

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Energy transfer in single phase Eu3+-doped Y2WO6 phosphors

机译：单相EU3 + - 掺杂Y2WO6磷光体的能量转移

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Inorganic phosphors based on monoclinic Y2WO6 doped with Eu3+ ions were prepared via conventional solid-state reactions at high temperature. A total of five samples were obtained with different Eu3+ concentrations (0-9%). The purity of the as-prepared phases was checked by powder X-ray diffraction (PXRD). Through the Rietveld refinement, at low concentrations Eu3+ ions are found to occupy preferentially the Y2 (2f) sites in the host compound. However, for higher dopant concentrations, the occupancy of the (2e) and (4g) sites becomes relevant. The excitation, emission, and time-resolved emission spectra were examined in detail. Efficient energy transfer from the (WO6)(6-) groups to the Eu3+ activators was observed. The decay curves for the Eu3+ D-5(0) -> F-7(4) transition show a non-exponential behavior that is enhanced with increasing Eu3+ concentration. The experimental decay curves were fitted to the Inokuti-Hirayama model to gain some insight into the mechanism of the interaction between the Eu3+ ions in these phosphors.

机译：基于掺杂有EU3 +离子的单斜晶y2wo6的无机磷光体通过高温常规固态反应制备。用不同的EU3 +浓度（0-9％）获得总共五个样品。通过粉末X射线衍射（PXRD）检查AS制备相的纯度。通过RIETVELD改进，在低浓度下，发现EU3 +离子优先占据宿主化合物中的Y2（2F）位点。然而，对于较高的掺杂剂浓度，（2E）和（4G）位点的占用变性变得相关。详细研究了激发，发射和时间分辨的发射光谱。观察到从（WO6）（6-）基团到EU3 +活化剂的高效能量转移。 EU3 + D-5（0） - > F-7（4）转变的衰减曲线显示了随着EU3 +浓度的增加而增强的非指数行为。实验衰减曲线适用于Inokuti-Hirayama模型，以获得一些洞察这些磷光体中Eu3 +离子之间的相互作用的机制。

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《RSC Advances》 |2017年第25期|共7页
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Llanos J.; Espinoza D.; Castillo R.;
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Univ Catolica Norte Dept Quim Casilla 1280 Antofagasta Chile;

Univ Catolica Norte Dept Quim Casilla 1280 Antofagasta Chile;

Univ Catolica Norte Dept Quim Casilla 1280 Antofagasta Chile;

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中图分类化学;
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1. Energy transfer in single phase Eu3+-doped Y2WO6 phosphors [J] . Llanos J., Espinoza D., Castillo R. RSC Advances . 2017,第25期

机译：单相EU3 + - 掺杂Y2WO6磷光体的能量转移
2. Color-tunable luminescence from single-phased Sr_3YNa(PO_4)_3F:Tb~(3+)/ Eu~(3+) phosphors with good energy transfer efficiency for white light emitting diodes [J] . Yang Wenxin, Zhang Ze, Niu Jialiang, Applied Physics . 2019,第12期

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3. Luminescence and energy transfer of a single-phased phosphor Y_2GeO_5: Bi~(3+), Tm~(3+), Tb~(3+), Eu~(3+) for white UV LEDs [J] . Fan Bin, Liu Jun, Zhao Wenyu, Optical Materials . 2019,第APRa期

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5. Single molecule and single nanoparticle spectroscopic studies using Forster resonance energy transfer and nanometal surface energy transfer in biological applications. [D] . Jaquins-Gerstl, Andrea. 2007

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7. Energy transfer in single phase Eu3+-doped Y2WO6 phosphors [O] . J. Llanos, D. Espinoza, R. Castillo 2017

机译：单相EU3 + - 掺杂Y2WO6磷光体的能量转移

Energy transfer in single phase Eu3+-doped Y2WO6 phosphors

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