Fluid Control of Dip Coating for Efficient Large‐Area Organic Solar Cells
Abstract
AbstractAs a classical low‐cost technique, dip coating has not been used for printable electronics. Here, the study demonstrates large‐area organic solar cells can be made by dip coating. The correlation is revealed among Van der Waals forces in precursor film, aggregation state of polymer, and fibrous orientation in active layer; the relationship is also expounded between fluid mechanics of the confined liquid in polymer scaffold and the continuity of the acceptor phase. By controlling the fluid characteristics, the ideal nanoscale bicontinuous interpenetrating network forms. As a result, the 1.0 cm2 rigid and 10.0 cm2 flexible cells exhibit efficiencies of 17.9% and 13.7%, respectively. Moreover, the method for predicting the optimal coating speed for the dip coating of given inks is proposed. Overall, this work not only demonstrates the superiority of dip coating for organic solar cell fabrication but also provides guidance for its application in printable electronics.
Article Details
Authors (9)
Jianqiu Wang
State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
Zhong Zheng
Department of Chemistry, The University of Chicago, Chicago, IL, USA.
Yubin Ke
China Spallation Neutron Source
Yafei Wang
Xiaoyu Liu
Optogenetics & Synthetic Biology Interdisciplinary Research Center, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, School of Pharmacy, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China
Long Ye
School of Materials Science and Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Key Laboratory of Organic Integrated Circuits, Ministry of Education, Collaborative innovation Center of Chemical Science and Engineering (Tianjin)
Shaoqing Zhang
Department of Chemistry, The Pennsylvania State University
Maojie Zhang
Jianhui Hou
State Key Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences