Achieving 16.68% efficiency ternary as-cast organic solar cells

被引：0
作者：
Ruijie Ma
Yang Tao
Yuzhong Chen
Tao Liu
Zhenghui Luo
Yuan Guo
Yiqun Xiao
Jin Fang
Guangye Zhang
Xiaojun Li
Xia Guo
Yuanping Yi
Maojie Zhang
Xinhui Lu
Yongfang Li
He Yan
机构：
[1] Hong Kong University of Science and Technology,Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction
[2] Shenzhen Technology University,College of New Materials and New Energies
[3] Qilu University of Technology (Shandong Academy of Sciences),School of Light Industry and Engineering
[4] Chinese University of Hong Kong,Department of Physics
[5] Soochow University,Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science
[6] South China University of Technology,Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices
[7] Chinese Academy of Sciences,Beijing National Laboratory for Molecular Science, Key Laboratory of Organic Solids, Institute of Chemistry
[8] Hong Kong University of Science and Technology-Shenzhen Research Institute,Centre for Mechanical Technology and Automation, Department of Mechanical Engineering
[9] eFlexPV Limited,undefined
[10] University of Aveiro,undefined
来源：
Science China Chemistry | 2021年 / 64卷
关键词：
organic solar cells; as-cast; ternary; morphology; high-performance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
State-of-the-art organic solar cells (OSCs) often require the use of high-boiling point additive or post-treatment such as temperature annealing and solvent vapor annealing to achieve the best efficiency. However, additives are not desirable in large-scale industrial printing process, while post-treatment also increases the production cost. In this article, we report highly efficient ternary OSCs based on PM6:BTP-ClBr1:BTP-2O-4Cl-C12 (weight ratio=1:1:0.2), with 16.68% power conversion efficiency (PCE) for as-cast device, relatively close to its annealed counterpart (17.19%). Apart from obvious energy tuning effect and complementary absorption spectra, the improved PCE of ternary device is mainly attributed to improved morphological properties including the more favorable materials miscibility, crystallinity, domain size and vertical phase separation, which endorse suppressed recombination. The result of this work provides understanding and guidance for high-performance as-cast OSCs through the ternary strategy.
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页码：581 / 589
页数：8
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