Fluid Control of Dip Coating for Efficient Large‐Area Organic Solar Cells

• DOI: 10.1002/adma.202417160
• Publication Date: 2025-01-27T07:22:49Z
• Authors: Jianqiu Wang; Zhong Zheng; Yubin Ke; Yafei Wang; Xiaoyu Liu; Long Ye; Shaoqing Zhang; Maojie Zhang; Jianhui Hou
• Keywords: Dip-coating

As 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 coating. The correlation is revealed among Van der Waals forces in precursor film, aggregation state of polymer, and fibrous orientation active layer; relationship also expounded between fluid mechanics confined liquid polymer scaffold continuity acceptor phase. By controlling characteristics, ideal nanoscale bicontinuous interpenetrating network forms. result, 1.0 cm2 rigid 10.0 flexible exhibit efficiencies 17.9% 13.7%, respectively. Moreover, method predicting optimal speed given inks proposed. Overall, this work only superiority cell fabrication but provides guidance its application