PbSe-PbTe固溶体单晶中铅、硫的析出研究

V. Kuznetsov
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引用次数: 0

摘要

铅硫族化合物及其固溶体表现出铅和硫原的逆行溶解度,当这种材料在低于其制造温度的温度下使用时,可能导致过量成分的沉淀和电性能的退化。本文研究了过饱和PbSe、PbTe单晶及其固溶体中铅、硫的析出动力学。在垂直石英安瓿中,通过升华程序从气相生长单晶。样品处理时间范围从2分钟到几百小时,在三个温度下的铅和硫饱和晶体。在动力学数据分析的基础上,估算了沉淀活化能,并与铅、硫扩散活化能进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Precipitation study of lead and chalcogens in single crystals of PbSe-PbTe solid solution
Lead chalcogenides and their solid solutions exhibit a retrograde solubility of lead and chalcogens that can result in the precipitation of excess components and degradation of electrical properties when this materials are used at temperatures lower then their fabrication temperature. The kinetic of precipitation of lead and chalcogens from supersaturated single crystals PbSe, PbTe, and their solid solution has been studied in this work. Single crystals were grown from vapour phase by a sublimation procedure in a vertical quartz ampoules. Sample treatment times ranged from 2 min to several hundred hours at three temperatures for both lead- and chalcogen-saturated crystals. Based on the analysis of the kinetic data the activation energy of precipitation was estimated and compared with the activation energy of diffusion of lead and chalcogens.
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