Fabrication and Luminescent Properties of Translucent Ce3+:Lu2SiO5 Ceramics by Spark Plasma Sintering
Fabrication and Luminescent Properties of Translucent Ce3+:Lu2SiO5 Ceramics by Spark Plasma Sintering
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DOI：
10.4028/www.scientific.net/amr.295-297.1300
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发表时间：
2011-07
期刊：
影响因子：
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通讯作者：
Ting Lin;Lingcong Fan;Z. Xu;Ying Shi;Jianjun Xie;Lianyun Deng;Yuying Ren
中科院分区：
文献类型：
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作者：
Ting Lin;Lingcong Fan;Z. Xu;Ying Shi;Jianjun Xie;Lianyun Deng;Yuying Ren
采用放电等离子烧结（SPS）技术，以溶胶-凝胶法制备的Ce：Lu 2SiO 5（LSO）纳米粉体为原料，研究了Ce：LSO多晶闪烁陶瓷的制备。在1350°C、50 MPa烧结5 min的最佳烧结条件下，制备出了晶粒细小、致密的多晶Ce：LSO陶瓷。在1000°C空气中退火15小时后，获得了具有优良发光特性的半透明Ce：LSO陶瓷样品。在360 nm紫外光激发下，Ce：LSO陶瓷在425 nm处有一个宽的发射峰，衰减时间仅为9.67 ns。在X射线激发下，退火样品（掺杂0.5mol%Ce ~（3+））的发光强度是BGO晶体的3倍。Ce：LSO多晶陶瓷良好的发光特性使其成为未来辐射探测领域中一种有前途的高性能闪烁体候选材料。
The spark plasma sintering (SPS) technique was employed to investigate the fabrication of cerium-doped lutetium orthosilicate (Ce:Lu2SiO5, LSO) polycrystalline scintillation ceramics starting from nanosized Ce:LSO powders synthesized by sol-gel processing. Fully-densed polycrystalline Ce:LSO ceramics with fine grains were fabricated on optimal sintering conditions of 1350°C for 5 min under pressure of 50 MPa. Translucent monolithic Ce:LSO ceramic sample was obtained with excellent luminescent characteristics after being annealed in air at 1000°C for 15 hrs. Under 360 nm UV excitation, a broad emission peak centered at 425 nm was detected for Ce:LSO ceramic, with a short decay time of only 9.67 ns. The luminescence intensity of annealed sample(doped by 0.5mol% Ce3+) is 3 times greater than that of BGO crystal under X-ray excitation. The good luminescent characteristics make Ce:LSO polycrystalline ceramics a promising scintillator candidate with high performance for radiation detection in future.