Unraveling the Stretch‐Induced Microstructural Evolution and Morphology–Stretchability Relationships of High‐Performance Ternary Organic Photovoltaic Blends

• DOI: 10.1002/adma.202207884
• Publication Date: 2022-11-05T06:01:00Z
• Authors: Zhongxiang Peng; Kaihu Xian; Junwei Liu; Yaowen Zhang; Xiaokang Sun; Wenchao Zhao; Yunfeng Deng; Xiuhong Li; Chunming Yang; Fenggang Bian; Yanhou Geng; Long Ye
• Keywords: Organic Electronics; Acceptor

The stretchability and stretch-induced structural evolution of organic solar cells (OSCs) are pivotal for their collapsible, portable, wearable applications, they mainly affected by the complex morphology active layers. Herein, a highly ductile conjugated polymer P(NDI2OD-T2) is incorporated into layers high-efficiency OSCs based on nonfullerene small molecule acceptors to simultaneously investigate morphological, mechanical, photovoltaic properties under stretching ternary blend films with various acceptor contents. robustness indicated evolution, which monitored in real-time combination situ wide/small angle X-ray scattering. It found that adding soft can enhance more entangled chains tie dissipate strain. Furthermore, blends be superbly predicted 3D equivalent box model. This work provides instructive insight guidance designing stretchable electronics predicting multicomponent blends.