To increase more than 10% in efficiency of perovskite solar cells by using nanoholes SnO_(2)  

作　　者：Shu-Ren Sun Xi-Xi Xie Guo-Gang Qin Li-Xin Xiao 

机构地区：[1]State Key Laboratory for Mesoscopic Physics and Department of Physics,Peking University,Beijing 100871,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Rare Metals》2021年第10期2778-2784,共7页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos.11674004,61935016 and 61775004);the National Key R&D Program of China (No.2016YFB0401003);the Science and Technology Planning Project of Guangdong Province,China (No.2017B090904021)。

摘　　要：The perovskite solar cells have been intensively investigated these years due to their premium electrical and optical properties as well as huge potential for application.In order to further increase the power conversion efficiency(PCE) of the thin film perovskite solar cells, light management should be taken into consideration. Herein, we apply a lithography method to transfer randomly distributed polystyrene(PS) nanospheres into the electron transporting SnO_(2) layer, by means of which, a nanoholes structure is formed. Finally, we get a nanostructured perovskite layer under low temperature(less than 150 ℃).The depth of SnO_(2) nanoholes is around 60 nm when the device is fabricated with 300-nm PS, and 150 nm in depth when 500-nm PS is used. The device gains PCE of 17.97%,which is 12.3% higher than that with planar electrontransporting SnO_(2) layer and 300-nm CH_(3)NH_(3)PbI_(3) layer.Our findings provide an applicable method to improve the light absorption, which can not only make the absorbing layer of lead-based perovskite solar cells thinner to help decrease the content of lead, but also increase the PCE of non-lead perovskite devices.

关 键 词：Light trap PEROVSKITE Solar cell NANOHOLE Nanosphere lithography 

分 类 号：TQ134.32[化学工程—无机化工] TM914.4[电气工程—电力电子与电力传动]