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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A lanthanide ion-doped Ba3Sc2F12 phosphor: hydrothermal synthesis, morphological control energy transfer, and temperature-sensing performance
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A lanthanide ion-doped Ba3Sc2F12 phosphor: hydrothermal synthesis, morphological control energy transfer, and temperature-sensing performance

机译：镧系元素离子掺杂BA3SC2F12磷光体：水热合成，形态控制能量转移和温度传感性能

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摘要

Ba3Sc2F12 crystals were synthesized by a facile one-step hydrothermal method with Ba/Sc raw material in a ratio of 3: 2. With the F/Sc ratio increasing from 4 to 8, the obtained crystal's morphology evolved gradually from a strip to a chocolate shape; further, the use of the additives, such as CTAB and EDTA, the obtained crystal's morphology changed from strip to cubic. The energy transfer of Ce3+ -> Tb3+ in the Ba3Sc2F12 host was also explored, and it was found to belong to a dipole-dipole interaction mechanism; the color of the light could be adjusted from blue-violet to green due to the different energy transfer efficiencies at different Ce3+ and Tb3+ ion-doping concentrations. Because of the thermal coupling level of Er3+ (H-2(11/2) -> I-4(1)5/2 and S-4(3/2) -> I-4(15/2)), Ba3Sc2F12:14%Yb3+,2%Er3+ phosphors showed an excellent temperature-sensing ability with S-A(max) = 0.0043 K-1 and T-max = 523 K, which are much better than the previously reported values for Yb3+/Er3+ co-doped systems. The as-prepared lanthanide ion-doped phosphors might have potential to serve as color light/displays and temperature control/sensors.
机译：Ba3SC2F12晶体通过Ba / SC原料的粘合性一步水热法合成，比例为3：2。与4至8的F / SC比率增加，所获得的晶体形态从条带逐渐发展到巧克力形状;此外，使用添加剂（如CTAB和EDTA），所获得的晶体形态从条带变为立方。还探讨了CE3 + - > TB3 +的能量转移，并发现了它属于偶极偶极相互作用机制;由于不同CE3 +和TB3 +离子掺杂浓度不同的能量转移效率，光的颜色可以从蓝紫色到绿色调节到绿色。由于ER3 +的热耦合水平（H-2（11/2） - > I-4（1）5/2和S-4（3/2） - > I-4（15/2）），Ba3SC2F12 ：14％YB3 +，2％ER3 +磷光体显示出优异的温度感测能力，SA（MAX）= 0.0043 k-1和T-MAX = 523 k，这比先前报道的YB3 + / ER3 +共掺杂的值好得多系统。由制备的镧系元素离子掺杂的磷光体可能具有用作彩色光/显示器和温度控制/传感器的潜力。

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