在空气环境中通过铕离子掺杂3A分子筛获得的铕激活绿色发光荧光粉及其高效绿色发光二极管
Eu-Activated Green-Emitting Phosphor Obtained from Eu Ions doping Zeolite-3A in Air Surroundings and Its Efficient Green Light-Emitting Diodes.
作者信息
Wu Honge, Fei Guang Tao, Ma Xiao Li, Hu Ze Min, Gao Xu Dong, Wei Yong Shuai, Zhang Junxi, De Zhang Li
机构信息
Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, P.O. Box 1129, Hefei, 230031, People's Republic of China.
University of Science and Technology of China, Hefei, 230026, People's Republic of China.
出版信息
Nanoscale Res Lett. 2019 Aug 28;14(1):298. doi: 10.1186/s11671-019-3130-8.
Eu-activated phosphors are widely applied in lighting and display areas because of their good optical performance. In this paper, an excellent green-emitting zeolite-3A: 1.3 wt% Eu phosphor is prepared by a green and eco-friendly high-thermal reaction method without any reducing atmosphere or agents. Meanwhile, the reducing mechanism from Eu ions to Eu ions is investigated. The experiment results show that the morphology, crystal structure, and luminescent property are affected by sintering temperature. The resulting sample shows the broad excitation band is in the range of 310-450 nm and the peak of the broad emission band is located at 523 nm. Furthermore, zeolite-3A: 1.3 wt% Eu phosphor is encapsulated on a commercial UV-emitting chip to fabricate a purity green light-emitting diode (LED) with the Commission Internationale de L'Eclairage (CIE) color coordinates at (0.295, 0.537).
铕激活的磷光体因其良好的光学性能而广泛应用于照明和显示领域。本文采用绿色环保的高温反应法，在无任何还原气氛或还原剂的情况下制备了一种优异的绿色发光沸石-3A:1.3 wt%铕磷光体。同时，研究了铕离子到铕离子的还原机理。实验结果表明，烧结温度对其形貌、晶体结构和发光性能有影响。所得样品的宽激发带在310-450 nm范围内，宽发射带的峰值位于523 nm处。此外，将沸石-3A:1.3 wt%铕磷光体封装在商用紫外发光芯片上，制备出了国际照明委员会（CIE）色坐标为（0.295, 0.537）的纯绿色发光二极管（LED）。
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