Synthesis of chalcopyrite CuIn_1?xGa_xSe₂ alloys for photovoltaic application by a novel melting method

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• 作者：Teng Chen ; Youwen Zhao ; Zhiyuan Dong ; Jun Yang ; Tong Liu
• 关键词：Solar energy materials ; CuIn1&minus ; xGaxSe2 ; Thin film ; Melting synthesis ; Sputtering
• 刊名：Materials Letters
• 出版年：2013
• 出版时间：1 September, 2013
• 年：2013
• 卷：106
• 期：Complete
• 页码：52-55
• 全文大小：3344 K

文摘

CuIn_1?xGa_xSe₂ (CIGS) compounds used for the fabrication of thin-film solar cell absorber layers have been synthesized by a novel melting method which is easily controlled and practical. Based on vapor phase transport caused by the temperature gradient built, the quaternary CIGS alloy was prepared from the low-cost elementary Cu, In, Ga and Se in a closed quartz tube at 1100 ¡ãC for 3 h. Through various characterization methods, the as-synthesized alloy with crystal grains sized 100-150 ¦Ìm presented a desirable chemical composition and a single-phase chalcopyrite structure. Furthermore, the CIGS absorber layer made from this material turned out to be high-quality with a correct phase and large nanocrystals, indicating great application potential of the proposed method in low-cost solar cell fabrication.