Energy transfer, optical properties and thermal stability of Ce3+, Tb3+ activated apatite-type Ca8NaGd(PO4)(6)F-2 phosphors
Energy transfer, optical properties and thermal stability of Ce3+, Tb3+ activated apatite-type Ca8NaGd(PO4)(6)F-2 phosphors
复制标题
Ce3、Tb3激活磷灰石型Ca8NaGd(PO4)(6)F-2荧光粉的能量传输、光学性能和热稳定性
DOI：
10.1016/j.optmat.2020.110151
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发表时间：
2020
影响因子：
3.9
通讯作者：
Hanjing Wu
中科院分区：
文献类型：
--
作者：
Suxia Li;Mengjiao Xu;Luxiang Wang;Dianzeng jia;Nannan Guo;Chenchen Ji;Hanjing Wu
采用高温固相反应法，以磷灰石型Ca 8 NaGd（PO 4）6 F2（CNGF）为基质，掺杂Ce 3+和Tb 3+，制备了一种新型的颜色可调荧光粉。通过XRD和Rietveld精修对晶体结构进行了研究，明确了掺杂离子的结构参数和在晶格中的占位情况。Ce ~（3+）与Tb ~（3+）之间的能量传递显著提高了Tb ~（3+）的发光强度。根据CNGF：Ce ~（3+），Tb ~（3+）的荧光光谱和荧光衰减曲线，提出了CNGF：Ce ~（3+），Tb ~（3+）的能量传递机理。将CNGF：Ce 3+，Tb 3+荧光粉颗粒与细菌纤维素结合制备荧光纸，并对荧光纸的形貌和发光性能进行了研究。这些结果表明，所获得的CNGF：Ce 3+，Tb 3+是一种有前途的绿色荧光体候选者，用于固态照明和防伪应用。
A novel color tunable phosphor was developed by a high-temperature solid-state reaction route with apatite-type Ca8NaGd(PO4)6F2(CNGF) as matrix for the doping with Ce3+and Tb3+ions. The crystal structures were studied by XRD and Rietveld refinement, which clarified the structural parameters and the occupation of doped ions in crystal lattice. The luminescent intensity of Tb3+ions was significantly improved by the energy transfer from Ce3+to Tb3+ions. According to the luminescence spectra and fluorescence decay curves of CNGF: Ce3+, Tb3+, a possible energy transfer mechanism was proposed. Fluorescent paper was prepared by binding the CNGF: Ce3+, Tb3+phosphor particles with bacterial cellulose, and the morphology and luminescence properties of the paper were investigated. These results demonstrate that the obtained CNGF: Ce3+, Tb3+is a promising green phosphor candidate for solid-state lighting and anti-counterfeiting applications.