Fast growth of cerium-doped lutetium yttrium orthosilicate single crystals and their scintillation properties  

作　　者：Kunfeng Chen Dongfeng Xue 

机构地区：[1]State Key Laboratory of Crystal Materials,Institute of Crystal Materials,Shandong University,Ji'nan 250100,China [2]State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Shenzhen 518055,China [3]Multiscale Crystal Materials Research Center,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Changchun 130022,China

出　　处：《Journal of Rare Earths》2021年第12期1527-1532,I0003,共7页稀土学报（英文版）

基　　金：Project supported by National Natural Science Foundation of China(51832007);Research and Development Project of Scientific Instruments of the Chinese Academy of Sciences(YJKYYQ20170073);Natural Science Foundation of Shandong Province(ZR2020ZD35)。

摘　　要：The growth of high-quality and large-size cerium-doped lutetium yttrium orthosilicate(Ce:(LuY)2 SiO5,Ce:LYSO)crystals with lower cost has great influence on their applications in various physical devices.According to the chemical bonding theory of single crystal growth,the fast thermodynamic growth direction of Ce:LYSO is[010]direction.In this work,the maximum pulling rate of 3.5 mm/h is obtained along[010]direction of Ce:LYSO via the Czochralski(Cz)method.Finally,Ce:LYSO bulk single crystals with diameter of 64 mm and length of 220 mm and mass of 4.2 kg are grown.The luminescence performance of low-doped Ce:LYSO for nuclear irradiation(^(22)Na)detector device was studied.Light yield of26193 ph/MeV and decay time of 38 ns are obtained.The present work provides a promising fast growth approach to achieving large size functional bulk crystal via both thermodynamic and kinetic controls.

关 键 词：Crystal growth LYSO Czochralski method Chemical bonding theory Inorganic scintillator Rare earths 

分 类 号：O782[理学—晶体学] TB34[一般工业技术—材料科学与工程]