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文章基于CZTSe光伏材料的相图,从理论上研究了(1)基于富Zn相的生长路线;(2)基于Cu2SnSe3-ZnSe的两者反应生长路线;(3)基于富Cu相的生长路线。同时,文章研究了不同的合成路径CZTSe生长过程中杂相的形成可能,分析了缺陷的形成能,在此基础上得出了CZTSe体系易控制易生长的实验基础理论。并使用自主研发的“四室八源共蒸发系统”成功地监测到样品温度变化与样品处在不同相空间的关系,并观测到相变过程中相限跨越的温度变化,为以后制作高效率的CZTSe太阳电池提供了理论依据和实验指导。
Based on the phase diagram of CZTSe photovoltaic materials, we have studied (1) the growth route based on Zn-rich phase, (2) the reaction route based on Cu2SnSe3-ZnSe, and (3) the growth route based on Cu-rich phase. At the same time, the article studies the possibility of the formation of heterogeneous phases during the growth of CZTSe with different synthesis routes, and analyzes the formation energy of defects. On this basis, the experimental basic theory of easy controllable growth of CZTSe system is obtained. The self-developed “four-chamber eight-source co-evaporation system” successfully monitored the relationship between the sample temperature and the sample in different phase spaces and observed the temperature change across the phase limit during the phase change. High efficiency CZTSe solar cells provide the theoretical basis and experimental guidance.