应用金相显微镜、能量色散谱仪、X射线衍射仪等对AgGa0.8In0.2Se2晶体中的二相沉淀物进行了观察、测试和分析,发现呈梭状的二相沉淀物存在明显Ag含量缺失.根据EDS测试结果和差热实验数据研究了消除该二相沉淀物的热处理方案,即在含有Ag2Se组分的AgGa0.8In0.2Se2多晶混合粉末包埋下,对AgGa0.8 In0.2Se2晶体进行淬火处理.结果表明:用含有1.26wt% Ag2Se的同成分多晶混合粉末包埋,在720℃下保温120 h后经淬火处理的晶片,梭状二相沉淀物得到很好的消除,红外透过率得到显著提高.
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