title: Enhancing Performance of Large-Area Organic Solar Cells with Thick Film via Ternary Strategy.
abstract: Large-scale fabrication of organic solar cells requires an active layer with high thickness tolerability and the use of environment-friendly solvents. Thick films with high-performance can be achieved via a ternary strategy studied herein. The ternary system consists of one polymer donor, one small molecule donor, and one fullerene acceptor. The small molecule enhances the crystallinity and face-on orientation of the active layer, leading to improved thickness tolerability compared with that of a polymer-fullerene binary system. An active layer with 270 nm thickness exhibits an average power conversion efficiency (PCE) of 10.78%, while the PCE is less than 8% with such thick film for binary system. Furthermore, large-area devices are successfully fabricated using polyethylene terephthalate (PET)/Silver gride or indium tin oxide (ITO)-based transparent flexible substrates. The product shows a high PCE of 8.28% with an area of 1.25 cm2for a single cell and 5.18% for a 20 cm2module. This study demonstrates that ternary organic solar cells exhibit great potential for large-scale fabrication and future applications.
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Jianqi
authors.initials: J
authors.lastname: Zhang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Yifan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Fang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Liu
authors.initials: L
authors.lastname: Yuan
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Benzheng
authors.initials: B
authors.lastname: Xia
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Guodong
authors.initials: G
authors.lastname: Wang
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
authors.forename: Zaiyu
authors.initials: Z
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Yajie
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Ma
authors.affiliation: Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Yan
authors.affiliation: Division of Printed Electronics, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, 215123, China.
authors.forename: Wenming
authors.initials: W
authors.lastname: Su
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China.
authors.forename: Zhixiang
authors.initials: Z
authors.lastname: Wei
keywords: high performance; organic solar cells; ternary strategy; thick films