Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology

Lei Zhu, Ming Zhang, Jinqiu Xu, Chao Li, Jun Yan, Guanqing Zhou, Wenkai Zhong, Tianyu Hao, Jiali Song, Xiaonan Xue, Zichun Zhou, Rui Zeng, Haiming Zhu, Chun‐Chao Chen, Roderick C. I. MacKenzie, Yecheng Zou, Jenny Nelson, Yongming Zhang, Yanming Sun, Feng Liu