具有元素梯度的Cu_2ZnSnS_4薄膜  

Preparation of Cu_2ZnSnS_4 Films with Element Gradient Structure

作　　者：李晓亮 赵佳斌 王吉宁[2,3,4] 米菁 刘晓鹏[2,3,4] LI Xiao-liang;ZHAO Jia-bin;WANG Ji-ning;MI Jing;LIU Xiao-peng(Southwest China Research Institute of Electronic Equipment,Chengdu 100088,China;General Research Institute for Nonferrous Metals,Beijing 100088,China;National Non-ferrous New Energy Materials and Products Engineering Research Center,Beijing 100088,China;Non-ferrous Metal New Energy Basic Products Engineering Research Center,Beijing 100088,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,四川成都610036 [2]北京有色金属研究总院,北京100088 [3]国家有色金属新能源材料与制品工程技术研究中心,北京100088 [4]北京市有色金属新能源基础制品工程技术研究中心,北京100088

出　　处：《佳木斯大学学报（自然科学版）》2018年第3期406-409,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：科研院所技术开发研究专项资金(2013EG115002)

摘　　要：Cu(In,Ga)Se_2(CIGS)吸收层中的In、Ga元素梯度使得吸收层形成梯度化的带隙结构,该结构能有效提高电池的短路电流(Jsc)和开路电压(Voc),进而优化电池光电转换效率。利用磁控溅射设备,通过控制靶材的溅射功率渐变来实现薄膜中金属元素的梯度分布,为梯度带隙结构CZTS薄膜太阳能电池提供实验研究依据。In and Ga elements gradient will construct the gradient band structure in the absorption layer of Cu（ In,Ga） Se2（ CIGS） thin film solar cells. The gradient band structure can optimize photoelectric conversion efficiency of cells by increasing short circuit current（ Jsc） and enhancing open circuit voltage（ Voc）. The chemical formula of CZTS is similar to that of CIGS. The structure of their cells is also much similar. As a result,the optimization of CZTS cells＇ performance is usually based on the study of CIGS cells. However,the report of the gradient band structure in CZTS solar cells is still lacking. It has been shown that the band gap of CZTS can be influenced by the fluctuation of metal element content,which provides the possibility of constructing CZTS film with gradient band structure. In view of this,magnetron sputtering equipment was used in this study to construct metal element gradient through controlling the sputtering power,which provides the possibility of constructing CZTS film with gradient band structure.

关 键 词：Cu2ZnSnS4薄膜 元素梯度 梯度带隙结构 磁控溅射 

分 类 号：TK91[动力工程及工程热物理]