Enhanced Optical Performance of BaMgAl10O17:Eu2+ Phosphor by a Novel Method of Carbon Coating

Enhanced Optical Performance of BaMgAl10O17:Eu2+ Phosphor by a Novel Method of Carbon Coating
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通过碳涂层新方法增强 BaMgAl10O17:Eu2 荧光粉的光学性能

DOI:
10.1021/acs.jpcc.5b10215
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发表时间:
2016-01
影响因子:
3.7
通讯作者:
Hintzen, Hubertus T. (Bert)
Hintzen, Hubertus T. (Bert)
中科院分区:
化学3区
文献类型:
--
作者:
Wu, Mengqiang;Xu, Xin;van Ommen, J. Ruud;Hintzen, Hubertus T. (Bert)

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已经采用了许多策略来改善磷光体的热降解。由于石墨烯的稳定性和高透射率,本文报道了一种通过化学气相沉积在BaMgAl 10 O 17:Eu 2+(BAM)荧光粉颗粒上包覆碳的新方法。对碳包覆BAM的化学组成、微观结构和发光性能进行了表征。这种涂层可以控制在3-10个原子层内,这取决于反应时间。由于碳包覆后表面缺陷减少,有效减弱了Eu 2+氧化为Eu 3+的作用,不同层数对碳包覆BAM的光学性能有明显影响。碳包覆BAM荧光粉具有更高的发射强度和更好的高温抗氧化性比未包覆BAM荧光粉。这些结果表明,碳包覆荧光粉的方法是一种很有前途的改善其他发光和显示用荧光粉发光性能的方法。
Many strategies have been adopted to improve thermal degradation of phosphors. Because of the stability and high transmittance of graphene, here we report a novel method of carbon coating on BaMgAl10O17:Eu2+ (BAM) phosphor particles through chemical vapor deposition. The chemical composition, microstructure, and luminescence performance of carbon-coated BAM were characterized carefully. This coating can be controlled within 3–10 atomic layers, depending on the reaction time. Because of the decrease of surface defects and the effective weakening effect of oxidizing Eu2+ to Eu3+ after carbon coating, different layer numbers showed an obvious effect on the optical properties of carbon-coated BAM. Carbon-coated BAM phosphors had higher emission intensity and better oxidation resistance at high temperature than uncoated BAM phosphors. These results indicate that the method of carbon coating on phosphor particles is a promising way to improve the luminescence properties of other phosphors used in lighting and d...
表面包覆纳米BaMgAl10O17:Eu2蓝色荧光粉的微观结构及发光性能
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