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Luminescence properties and energy transfer of Eu3+/Tb3+ co-doped glass ceramics containing Na3Gd(PO4)2
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-12-20 , DOI: 10.1002/jccs.202000443 Xi Chen 1 , Hongbo Zhang 1 , Wentao Jia 1 , Xiangyu Zou 1 , Chunhui Su 1
Journal of the Chinese Chemical Society ( IF 1.6 ) Pub Date : 2020-12-20 , DOI: 10.1002/jccs.202000443 Xi Chen 1 , Hongbo Zhang 1 , Wentao Jia 1 , Xiangyu Zou 1 , Chunhui Su 1
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Tb3+-doped and Eu3+/Tb3+ co-doped transparent glass ceramics containing Na3Gd(PO4)2 crystal phase were prepared by melt crystallization. The types of crystals, grain size, and optical transmittance of the samples were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and UV visible absorption spectrometer. The effect of different heat treatment time on grain size, crystal morphology, and light transmittance was also studied. The luminescence performance of transparent glass ceramics was systematically studied by the excitation spectrum, emission spectrum, and the fluorescence lifetime. The optimal doping concentration of Tb3+ doped and Eu3+/Tb3+ co-doped were determined. When the mole percent concentration of Tb4O7 was 0.4%, the strongest green light was obtained at 546 nm (5D4 → 7F5). Meanwhile, the energy transfer process between Eu3+ and Tb3+ was discussed. Under the excitation of 374 nm, white light can be obtained by adjusting the concentration ratio of Eu3+ and Tb3+.
中文翻译：
含Na3Gd（PO4）2的Eu3 + / Tb3 +共掺杂玻璃陶瓷的发光特性和能量转移
通过熔融结晶制备含有Na 3 Gd（PO 4）2晶相的Tb 3+掺杂和Eu 3+ / Tb 3+共掺杂透明玻璃陶瓷。通过X射线衍射（XRD），扫描电子显微镜（SEM）和紫外可见吸收光谱仪研究了样品的晶体类型，晶粒尺寸和透光率。还研究了不同热处理时间对晶粒尺寸，晶体形态和透光率的影响。通过激发光谱，发射光谱和荧光寿命系统地研究了透明玻璃陶瓷的发光性能。Tb 3+的最佳掺杂浓度确定掺杂和共掺杂的Eu 3+ / Tb 3+。当Tb 4 O 7的摩尔百分比浓度为0.4％时，在546 nm（5 D 4 → 7 F 5）处获得最强的绿光。同时，讨论了Eu 3+与Tb 3+之间的能量转移过程。在374nm的激发下，可以通过调节Eu 3+和Tb 3+的浓度比来获得白光。
更新日期：2020-12-20
中文翻译：
含Na3Gd（PO4）2的Eu3 + / Tb3 +共掺杂玻璃陶瓷的发光特性和能量转移
通过熔融结晶制备含有Na 3 Gd（PO 4）2晶相的Tb 3+掺杂和Eu 3+ / Tb 3+共掺杂透明玻璃陶瓷。通过X射线衍射（XRD），扫描电子显微镜（SEM）和紫外可见吸收光谱仪研究了样品的晶体类型，晶粒尺寸和透光率。还研究了不同热处理时间对晶粒尺寸，晶体形态和透光率的影响。通过激发光谱，发射光谱和荧光寿命系统地研究了透明玻璃陶瓷的发光性能。Tb 3+的最佳掺杂浓度确定掺杂和共掺杂的Eu 3+ / Tb 3+。当Tb 4 O 7的摩尔百分比浓度为0.4％时，在546 nm（5 D 4 → 7 F 5）处获得最强的绿光。同时，讨论了Eu 3+与Tb 3+之间的能量转移过程。在374nm的激发下，可以通过调节Eu 3+和Tb 3+的浓度比来获得白光。
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