摘要
以Si(OC_2H_5)_4和Bi(NO_3)_3·5H_2O作为前驱体、柠檬酸作为溶剂,按化学计量比配料,采用溶胶–凝胶法合成并经高温烧结制备了纯相Bi_4Si_3O_(12)多晶粉末,每批次可合成250 g。以此为原料、<001>取向BSO为籽晶,在坩埚下降炉内生长了BSO晶体,讨论了晶体的析晶行为,获得了30 mm×30 mm×210 mm的高质量BSO晶体。闪烁性能测试表明,该晶体能量分辨率为18.9%,光输出为同等条件下CSI(T1)晶体的7.2%。
Using stoichiometric Si(OC2H5)4 and Bi(NO3)3·5H2O as precursors and citric acid as solvent, polycrystallineBi4Si3O12 (BSO) powders were synthesized by Sol-Gel method and sintered at high temperature. Batch production of250 g powders was realized. Using as-synthesized BSO powders and 〈001〉-oriented BSO seeds, BSO crystals weregrown in the vertical Bridgman furnace. The crystallization behavior was discussed and high quality BSO crystal up to30 mm× 30 mm× 210 mm was obtained. The scintillation characteristics of BSO single crystals were investigated.The energy resolution of the BSO crystal was 18.9% and the relative light yield of the crystal was 7.2% compared withCsI(T1) at the same conditions.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2016年第10期1147-1150,共4页
Journal of Inorganic Materials
基金
National Natural Science Foundation of China(51342007,51572175)
关键词
溶胶-凝胶法
硅酸铋晶体
坩埚下降法
晶体生长
闪烁性能
Sol-Gel method
Bi4Si3O12 crystal
vertical Bridgman method
crystal growth
scintillation property