18.01%Efficiency organic solar cell and 2.53%light utilization efficiency semitransparent organic solar cell enabled by optimizing PM6:Y6 active layer morphology  

作　　者：Kuibao Yu Wei Song Jinfeng Ge Kanghui Zheng Lin Xie Zhenyu Chen Yi Qiu Ling Hong Cuirong Liu Ziyi Ge 

机构地区：[1]Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices,Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China [2]Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences,Beijing 100049,China [3]College of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China

出　　处：《Science China Chemistry》2022年第8期1615-1622,共8页中国科学（化学英文版）

基　　金：supported by the National Science Fund for Distinguished Young Scholars(21925506);the National Natural Science Foundation of China(U21A20331,51773212,81903743,51875384);Ningbo S&T Innovation 2025 Major Special Programme(2018B10055);CAS Key Project of Frontier Science Research(QYZDBSSW-SYS030);Ningbo Natural Science Foundation(2021J192)。

摘　　要：Optimizing the photoactive layer morphology is a simple,promising way to improve the power conversion efficiencies(PCEs)of organic solar cells(OSCs).Here,we compared different post-processing treatments on PM6:Y6 blend films and relevant effects on device performances,including as-cast,thermal annealing and solvent annealing.This solvent annealing processes can effectively improve the vertical distribution and aggregation of polymer donors and small molecule acceptors,then optimize the active layer film morphology,ultimately elevating PCE.Thus,one of champion efficiencies of 18.01%was achieved based on the PM6:Y6 binary OSCs.In addition,a relatively high light utilization efficiency(2.53%)was achieved when a transparent electrode made of Cu(1 nm)and Ag(15 nm)was utilized to fabricate a semitransparent OSC with a remarkable PCE of 13.07%and 19.33%average visible-light transmittance.These results demonstrated that carefully optimizing morphology of active layer is conducive to achieving a high-performance OSC.

关 键 词：organic solar cells solvent vapor annealing morphology optimization light utilization efficiency 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB383.2[一般工业技术—材料科学与工程]