采用加速坩埚旋转技术-Bridgman(ACRT-B)法制备了φ40 mm的结构较为完整的Cd0.96Zn0.04Te晶锭.利用红外分光光度计测定晶片的近红外透射曲线,最大斜率切线法测定截止波长(cut-off wavelength,threshold wavelength),进而计算截止能量和该点的Zn组份.绘制了晶片表面的组织图,以及晶锭轴向剖面的Zn组份等高线图.实验结果表明:ACRT方法显著改善晶体组份的轴向偏析和径向偏析,晶锭中部存在两个Zn组份轴向和径向皆均匀的区域,分别约占晶锭体积的37%和16%,对应于两个大的单晶晶粒,大部分区域Zn组分径向偏析几乎完全消失.
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