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

作　　者：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 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(Key Laboratory for Renewable Energy,Chinese Academy of Sciences,Beijing 100190;Beijing Key Laboratory for New Energy Materials and Devices,Beijing 100190;Institute of Physics,Chinese Academy of Sciences,Beijing 100190;Laboratory of Plasma Physics and Materials,Beijing Institute of Graphic Communication,Beijing 102600)

机构地区：[1]Key Laboratory for Renewable Energy,Chinese Academy of Sciences,Beijing 100190 [2]Beijing Key Laboratory for New Energy Materials and Devices,Beijing 100190 [3]Institute of Physics,Chinese Academy of Sciences,Beijing 100190 [4]Laboratory of Plasma Physics and Materials,Beijing Institute of Graphic Communication,Beijing 102600

出　　处：《Chinese Physics Letters》2013年第12期179-182,共4页中国物理快报（英文版）

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.

摘　　要：Metal-insulator-semiconductor back contact has been employed for a perovskite organic lead iodide heterojunction solar cell,in which an ultrathin Al_(2)O_(3) film as an insulating layer was deposited onto the CH_(3)NH_(3)PbI_(3) 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.

关 键 词：ABSORBER PEROVSKITE IMPEDANCE 

分 类 号：O61[理学—无机化学]