Jingwei Zhu, Yuliang Xu, Yi Luo, Jincheng Luo, Rui He, Changlei Wang, Yang Wang, Kun Wei, Zongjin Yi, Zhiyu Gao, Juncheng Wang, Jiayu You, Zhihao Zhang, Huagui Lai, Shengqiang Ren, Xirui Liu, Chuanxiao Xiao, Cong Chen, Jinbao Zhang, Fan Fu, Dewei Zhao
All-perovskite tandem solar cells (TSCs) have exhibited higher efficiencies than single-junction perovskite solar cells (PSCs) but still suffer from the unsatisfactory performance of low-bandgap (LBG) tin-lead (Sn-Pb) subcells. The inherent properties of PEDOT:PSS are crucial to high-performance Sn-Pb perovskite films and devices; however, the underlying mechanism has not been fully explored and revealed. Here, we report a facile oxalic acid treatment of PEDOT:PSS (OA-PEDOT:PSS) to precisely regulate its work function and surface morphology...
April 19, 2024: Science Advances