中文摘要：

PbFCl是一种具有双读出功能的闪烁晶体，性能优异但制备困难。本研究通过调整PbFCl原料组份，探索F／CI摩尔LL（F／C1）对晶体生长、透光和发光性能的影响。实验结果表明，原料配方中适量富C1有利于生长出透明晶体，但会加剧解理。组分偏析会使晶胞参数略有改变，而对物相没有影响。x射线激发光谱发光峰位不随F／C1比改变而移动。透过光谱显示PbCl2组份增加，紫外吸收边会从300nm蓝移至275nm附近，F／C1变化不引入新的吸收峰，EwT计算表明F／Cl=1：1．25时晶体的双读出性能最好。

英文摘要：

Lead fluoride chloride （PbFC1） crystal has been proposed for dual readout application as it has excellent properties. In this study, the PbFC1 crystals were grown with different F/C1 ratios in the raw materials by modified Bridgman method. It is observed that excessive PbC12 in the raw materials is helpful to grow transparent crystals, meanwhile it may enhance the cleavage. The excessive PbF： or PbCI： only modifies the cell parameters, not the phase of PbFC1 crystal. The emission peaks in X-ray excited luminescence spectra do not depend on the F/C1 ratio in the raw materials. The UV cut-off edge of transmittance shifts from 300 nm to 275 nm when extra PbCI2 was added. According to the emission weighted transmittance of the samples, the crystals grown with F/C1=1：1.25 in the raw materials show the best dual readout properties among all the samples.