| Cd0.96Zn0.04Te单晶生长及晶体成分偏析 |
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| 引用本文： | 徐嵬,李宇杰,郭喜平,介万奇.Cd0.96Zn0.04Te单晶生长及晶体成分偏析[J].材料研究学报,1998,12(4):415-418. |
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| 作者姓名： | 徐嵬 李宇杰 郭喜平 介万奇 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室!西安市，710072，西北工业大学凝固技术国家重点实验室!西安市，710072，西北工业大学凝固技术国家重点实验室!西安市，710072，西北工业大学凝固技术国家重点实验室!西安市，710072 |
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| 基金项目： | 国家自然科学基金!59672004，航空科学基金 |
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| 摘 要： | 采用常规Ｂｒｉｄｇｍａｎ法和ＡＣＲＴ－Ｂ法进行Ｃｄ０．９６Ｚｎ０．０４Ｔｅ晶体生长实验。结果表明：ＡＣＲＴ产生的强迫对流在很大程度上消除了侧壁形核，有利于获得大的晶体；ＡＣＲＴ的加入提高了有效分凝系数ｋｅｆｆ，使其向平衡分凝系数ｋｅｑ趋近，导致轴向的偏析增大。
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| 关 键 词： | ACRT法 CZT 单晶生长 红外探测器 晶体成分偏析 |
| 收稿时间： | 1998-08-25 |
| 修稿时间： | 1998-08-25 |
SINGLE CRYSTAL GROWTH OF Cd_(0.96)Zn_(0.04)Te AND DETERMINATION OF Zn SEGREGATION |
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| XU Wei,LI Yuie,GUO Xiping,JIE Wanqi.SINGLE CRYSTAL GROWTH OF Cd_(0.96)Zn_(0.04)Te AND DETERMINATION OF Zn SEGREGATION[J].Chinese Journal of Materials Research,1998,12(4):415-418. |
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| Authors: | XU Wei LI Yuie GUO Xiping JIE Wanqi |
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| Affiliation: | XU Wei,LI Yuie,GUO Xiping,JIE Wanqi (State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xian ) |
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| Abstract: | In the present paper, ACRT is applied to the Bridgman growth of Cd0.96Zn0.04Te,The effects of ACRT on the Zn segregation in the Cd0.96Zn0.04Te are studied by comparing with standard Bridgman. The distribution of grains and the segregation of Zn in Cd0.96Zn0.04Te crystals are analyzed. The experimental results show to a great extent that the forced convection produced by ACRT eliminates the nucleation of freckles from the wall of the crucible and thus it is beneficial to obtaining crystals with large grains, but it increases the effective segregation coefficient, keff, and thus increases the axial segregation of Zn in the crystal. |
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| Keywords: | ACRT Cd_(0 06)Zn_(0 04)Te effective segregation coefficient k_(eff) |
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