Multicomponent Solar Cells with High Fill Factors and Efficiencies Based on Non-Fullerene Acceptor Isomers
Qiuning Wang,
Yiwen Hou,
Shasha Shi,
Tao Yang,
Ciyuan Huang,
Shangfei Yao,
Ziyang Zhang,
Chenfu Zhao,
Yudie Liu,
Hui Huang,
Lihong Wang,
Chaoyue Zhao,
Minghui Hao,
Ye Tian,
Bingsuo Zou,
Guangye Zhang
Affiliations
Qiuning Wang
College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Yiwen Hou
Julong College, Shenzhen Technology University, Shenzhen 518118, China
Shasha Shi
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Tao Yang
Julong College, Shenzhen Technology University, Shenzhen 518118, China
Ciyuan Huang
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Shangfei Yao
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Ziyang Zhang
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Chenfu Zhao
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Yudie Liu
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Hui Huang
College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Lihong Wang
College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Chaoyue Zhao
College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Minghui Hao
Suzhou Key Laboratory of Advanced Lighting and Display Technologies, School of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215500, China
Ye Tian
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Bingsuo Zou
Guangxi Key Laboratory of Processing for Nonferrous Metals and Featured Materials, Ministry of Education, School of Resources, Environments and Materials, Guangxi University, Nanning 530004, China
Guangye Zhang
College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Multicomponent organic solar cells (OSCs), such as the ternary and quaternary OSCs, not only inherit the simplicity of binary OSCs but further promote light harvesting and power conversion efficiency (PCE). Here, we propose a new type of multicomponent solar cells with non-fullerene acceptor isomers. Specifically, we fabricate OSCs with the polymer donor J71 and a mixture of isomers, ITCF, as the acceptors. In comparison, the ternary OSC devices with J71 and two structurally similar (not isomeric) NFAs (IT-DM and IT-4F) are made as control. The morphology experiments reveal that the isomers-containing blend film demonstrates increased crystallinity, more ideal domain size, and a more favorable packing orientation compared with the IT-DM/IT-4F ternary blend. The favorable orientation is correlated with the balanced charge transport, increased exciton dissociation and decreased bimolecular recombination in the ITCF-isomer-based blend film, which contributes to the high fill factor (FF), and thus the high PCE. Additionally, to evaluate the generality of this method, we examine other acceptor isomers including IT-M, IXIC-2Cl and SY1, which show same trend as the ITCF isomers. These results demonstrate that using isomeric blends as the acceptor can be a promising approach to promote the performance of multicomponent non-fullerene OSCs.
