Enhancing the performances of all-small-molecule ternary organic solar cells via achieving optimized morphology and 3D charge pathways

作     者：Yanhong Chang Jing Li Yilin Chang Yixiao Zhang Jianqi Zhang Kun Lu Xiangnan Sun Zhixiang Wei Yanhong Chang;Jing Li;Yilin Chang;Yixiao Zhang;Jianqi Zhang;Kun Lu;Xiangnan Sun;Zhixiang Wei

作者机构：Department of Environmental Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China CAS Key Laboratory of Nanosystem and Hierarchical FabricationCAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China Beijing Key Laboratory of Resource-oriented Treatment of Industrial PollutantsBeijing 100083China University of Chinese Academy of SciencesBeijing 100049China Shandong First Medical University&Shandong Academy of Medical SciencesTaian 271016China School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2021年第32卷第9期

页      面：2904-2908页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported financially by National Natural Science Foundation of China(Nos.21822503,51973043,51822301 and 91963126) the Ministry of Science and Technology of the People’s Republic of China(Nos.2016YFA0200700,2017YFA0206600) the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB36020000) Beijing National Laboratory for Molecular Sciences(No.BNLMS201907) Youth Innovation Promotion Association K.C.Wong Education Foundation the CAS Pioneer Hundred Talents Program 

主　　题：All-small-molecule Ternary organic solar cells Alloyed acceptor Morphology optimization 3D charge pathways 

摘      要：With the emergence of non-fullerene acceptors(NFAs),the power conversion efficiencies(PCEs)of allsmall-molecule organic solar cells(ASM-OSCs)have been significantly ***,due to the strong crystallinities of small molecules,it is much more challenging to obtain the ideal phase separation morphology and efficient charge transport pathways for ***,a high-efficiency ternary ASMOSC has been successfully constructed based on H11/IDIC-4 F system by introduction of IDIC with a similar backbone as IDIC-4F but weak ***,the addition of IDIC has effectively suppressed large-scale phase aggregation and optimized the morphology of the blend *** importantly,the molecular orientation has also been significantly adjusted,and a mixed face-on and edge-on orientation has formed,thus establishing a more favorable three-dimensional(3D)charge pathways in the active *** these improvements,the enhanced short-circuit current density(JSC)and fill factor(FF)of the ternary system have been *** addition,because of the high lowest unoccupied molecular orbital(LUMO)energy level of IDIC as well as the alloyed structure of the IDIC and IDIC-4F,the promoted open circuit voltage(VOC)of the ternary system has also been realized.