Residual porosity and optical properties of spark plasma sintered transparent polycrystalline cerium-doped YAG

被引：41
作者：
Wagner, Avital [1 ]
Ratzker, Barak [1 ]
Kalabukhov, Sergey [1 ]
Sokol, Maxim [1 ,2 ]
Frage, Nachum [1 ]
机构：
[1] Ben Gurion Univ Negev, Dept Mat Engn, POB 653, IL-84105 Beer Sheva, Israel
[2] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2019年 / 39卷 / 04期
关键词：
Ce:YAG ceramic; Spark plasma sintering; Residual porosity; Transparency; Photoluminescence; MAGNESIUM ALUMINATE SPINEL; LIGHT-SCATTERING; CERAMIC PHOSPHORS; SAMPLE THICKNESS; GARNET YAG; SPS; DENSIFICATION; LUMINESCENCE; TRANSMISSION; PORES;
D O I：
10.1016/j.jeurceramsoc.2018.11.006
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Transparent cerium-doped yttrium aluminum garnet (Ce:YAG) phosphors are promising candidates for high-power white light emitting diode applications. In the present study, Ce:YAG powder was synthesized by a co-precipitation method and highly transparent ceramics were fabricated by spark plasma sintering. The effects of temperature and pressure, as well as post-sintering treatments (annealing or hot isostatic pressing), on residual porosity were studied by electron and confocal laser microscopy. Correlation between residual porosity characteristics (pore size and volume fraction) and optical properties (in-line transmittance and photoluminescence intensity) of the luminescent transparent ceramics was established.
引用
收藏
页码：1436 / 1442
页数：7
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