硒铟镓银晶体中二相沉淀物研究  

Study on the Second-phase Precipitates in AgGa_(1-x)In_xSe_2 Single Crystal

作　　者：赵玲[1] 赵北君[1] 朱世富[1] 陈宝军[1] 何知宇[1] 许建华[1] 吴莉姝[1] 沙铭雨[1] 王文阳[1] 

机构地区：[1]四川大学材料科学系,成都610064

出　　处：《人工晶体学报》2013年第5期783-787,803,共6页Journal of Synthetic Crystals

基　　金：教育部博士点基金(20040610024)资助项目

摘　　要：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AgGa0.8In0.2Se2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。The second-phase precipitates in AgGa0.8In0.2Se2 crystal were investigated by metalloscope,energy dispersive spectrometer,X-ray diffractometer,etc.The results indicated that the content of Ag in the spindle-shaped precipitates wasn' t sufficient compared with normal substance of stoichiometric ratio.Based on the results of EDS and DSC,heat treatment was adopted to eliminate the second-phase precipitates.The samples were quenched in the cover-up of AgGa0.8In0.2Se2 polycrystalline powder mixed with a slight amount of Ag2Se.The results indicated that the second-phase precipitates were well eliminated after being quenched at 720 ℃ for 120 h in the atmosphere of the same composition of polycrystals containing 1.26wt% Ag2Se.Moreover,the IR transmittance was also remarkably enhanced.

关 键 词：硒铟镓银 二相沉淀物 热处理 红外透过率 X射线衍射分析 

分 类 号：O775[理学—晶体学]