Ternary Blending Driven Molecular Reorientation of Non-Fullerene Acceptor IDIC with Backbone OrderClick to copy article linkArticle link copied!
- Yiqun XiaoYiqun XiaoDepartment of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, ChinaMore by Yiqun Xiao
- Ruijie MaRuijie MaDepartment of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, ChinaMore by Ruijie Ma
- Guodong ZhouGuodong ZhouDepartment of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, ChinaMore by Guodong Zhou
- Jingshuai ZhuJingshuai ZhuDepartment of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, ChinaMore by Jingshuai Zhu
- Tsz-Ki LauTsz-Ki LauDepartment of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, ChinaMore by Tsz-Ki Lau
- Shuixing DaiShuixing DaiDepartment of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, ChinaMore by Shuixing Dai
- Jeromy James RechJeromy James RechDepartment of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United StatesMore by Jeromy James Rech
- Ni ZhaoNi ZhaoDepartment of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, ChinaMore by Ni Zhao
- Wei YouWei YouDepartment of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United StatesMore by Wei You
- He YanHe YanDepartment of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration & Reconstruction, Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, ChinaMore by He Yan
- Xiaowei ZhanXiaowei ZhanDepartment of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, ChinaMore by Xiaowei Zhan
- Xinhui Lu*Xinhui Lu*Email [email protected]Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, ChinaMore by Xinhui Lu
Abstract
![Abstract Image](/cms/10.1021/acsaem.0c01858/asset/images/medium/ae0c01858_0006.gif)
The bulk-heterojunction morphology of organic solar cells is well recognized to be critical to the device performance and has received extensive research efforts in developing viable morphology tuning strategies. In this work, we present a morphology tuning approach for the molecular packing orientation, that is, through the ternary mixing of a donor polymer FTAZ with two distinctly oriented non-fullerene acceptors, IDIC and INIC3. By changing the incorporation concentration of INIC3, the originally bimodal oriented IDIC gradually reoriented to the dominant edge-on orientation. Remarkably, because of the strong backbone order induced from the end group π–π stacking of IDIC, ternary devices with strong edge-on order and appropriate phase separation domain sizes still exhibited good electron mobility in the out-of-plane direction. It suggests that the backbone order could bridge in-plane and out-of-plane electron transfer in the ternary devices, facilitating charge collection and suppressing bimolecular recombination.
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