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Enhanced Performance in Perovskite Organic Lead Iodide Heterojunction Solar Cells with Metal-Insulator-Semiconductor Back Contact

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【作者】石将建；董婉；徐余颛；李春辉；吕松涛；朱立峰；董娟；罗艳红；李冬梅；孟庆波；陈强；

【Author】 SHI Jiang-Jian;DONG Wan;XU Yu-Zhuan;LI Chun-Hui;LV Song-Tao;ZHU Li-Feng;DONG Juan;LUO Yan-Hong;LI Dong-Mei;MENG Qing-Bo;CHEN Qiang;Key Laboratory for Renewable Energy,Chinese Academy of Sciences;Beijing Key Laboratory for New Energy Materials and Devices;Institute of Physics,Chinese Academy of Sciences;Laboratory of Plasma Physics and Materials,Beijing Institute of Graphic Communication;

【机构】 Key Laboratory for Renewable Energy,Chinese Academy of Sciences； Beijing Key Laboratory for New Energy Materials and Devices； Institute of Physics,Chinese Academy of Sciences； Laboratory of Plasma Physics and Materials,Beijing Institute of Graphic Communication；

【摘要】 Metal-insulator-semiconductor back contact has been employed for a perovskite organic lead iodide heterojunction solar cell,in which an ultrathin Al₂O₃ film as an insulating layer was deposited onto the CH₃NH₃PbI₃ by atomic layer deposition technology.The light-to-electricity conversion efficiency of the devices is significantly enhanced from 3.30%to 5.07%.Further the impedance spectrum reveals that this insulating layer sustains part of the positive bias applied in the absorber region close to the back contact and decreases the carrier transport barrier,thus promoting transportation of carriers.更多还原

【Abstract】 Metal-insulator-semiconductor back contact has been employed for a perovskite organic lead iodide heterojunction solar cell,in which an ultrathin Al₂O₃ film as an insulating layer was deposited onto the CH₃NH₃PbI₃ by atomic layer deposition technology.The light-to-electricity conversion efficiency of the devices is significantly enhanced from 3.30%to 5.07%.Further the impedance spectrum reveals that this insulating layer sustains part of the positive bias applied in the absorber region close to the back contact and decreases the carrier transport barrier,thus promoting transportation of carriers.更多还原

【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 21173260,51072221 and 91233202;the National Basic Research Program of China under Grant Nos 2012CB932903 and 2012CB932904;the Knowledge Innovation Program of the Chinese Academy of Sciences

【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2013年12期

【分类号】TM914.4

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