摘要
碘化铅(PbI2)晶体的平均原子序数较高,有较宽的禁带宽度,作为一种新型室温核辐射探测器材料有着广阔前景.以高纯Pb和I2单质为原料,采用两温区气相输运法(TVM)成功合成出单相PbI2多晶原料,并以此为原料,用垂直布里奇曼法(VBM)生长了3种不同颜色的PbI2单晶体.研究表明:晶体生长工艺参数对晶体的质量有重要影响,适当调整温度场和安瓿在生长炉中的位置,可有效地避免或减轻晶体富碘现象,从而生长出优质的黄色PbI2单晶体.
Lead Iodide （PbI2 ） crystal is a promising material for room temperature nuclear radiation detectors, characterized by its large average atomic number and wide band gap. In this paper, the Lead Iodide （PbI2 ） poly-crystal has been successfully synthesized directly from Pb and 12 by two-zone vapor-transporting method（TVM）. PbI2 single crystal with three different colors were prepared using Vertical Bridgman Method （VBM）. By adjusting the position of ampoule in a suitable temperature gradient to prevent iodine atoms from the crystal inside, the yellow PbI2 single crystal with good quality can be prepared.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2006年第4期428-431,共4页
Materials Science and Technology
基金
西华大学青年教师基金资助项目
