Fabrication and Photoluminescence Characteristics of Eu3+‐Doped Lu2O3 Transparent Ceramics
Fabrication and Photoluminescence Characteristics of Eu3+‐Doped Lu2O3 Transparent Ceramics
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DOI：
10.1111/j.1551-2916.2006.01016.x
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发表时间：
2006-06
影响因子：
3.9
通讯作者：
Qiwei Chen;Ying Shi;L. An;Jiyang Chen;Jianlin Shi
中科院分区：
文献类型：
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作者：
Qiwei Chen;Ying Shi;L. An;Jiyang Chen;Jianlin Shi
采用氢氧化铵（NH3·H2O）和碳酸氢铵（NH 4 HCO 3）混合沉淀法制备了高烧结性掺铕镥粉体。在1000°C下煅烧2 h所得粉末显示出良好的分散性和优异的烧结性。采用无压烧结法，在1850°C、流动H2气氛中烧结6 h，在不添加任何添加剂的条件下，制备出相对密度为99.9%的高透明多晶镥陶瓷。透明材料的平均晶粒尺寸估计为50-60 μm。Lu 2 O3陶瓷（厚度为1 mm）在可见波长区域的光学在线透射率达到80%。研究了所得透明板和相应纳米荧光粉的发光和衰减行为。
A novel co-precipitation process was adopted for the preparation of highly sinterable europium-doped lutetia powders using ammonium hydroxide (NH3·H2O) and ammonium hydrogen carbonate (NH4HCO3) as the mixed precipitant. The resultant powders calcined at 1000°C for 2 h showed good dispersity and excellent sinterability. Highly transparent polycrystalline lutetia ceramics with a relative density of ∼99.9% were fabricated by pressureless sintering in flowing H2 atmosphere at 1850°C for 6 h without any additives. The average grain sizes of the transparent material were estimated to be 50–60 μm. Optical in-line transmittance in the visible wavelength region for Lu2O3 ceramics (1 mm in thickness) reached 80%. The luminescence and decay behavior of the obtained transparent plate and the corresponding nanophosphors were also investigated.