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《Journal of Synthetic Crystals》 2013-05
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Study on the Second-phase Precipitates in AgGa_(1-x)In_xSe_2 Single Crystal

ZHAO Ling,ZHAO Bei-jun,ZHU Shi-fu,CHEN Bao-jun,HE Zhi-yu,XU Jian-hua, WU Li-shu,SHA Ming-yu,WANG Wen-yang(Department of Materials Science,Sichuan University,Chengdu 610064,China)(Received 5 September 2012,accepted 26 December 2012)  
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.
【Fund】: 教育部博士点基金(20040610024)资助项目
【CateGory Index】: O775
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