Simultaneous bottom-up double-layer synergistic optimization by multifunctional fused-ring acceptor with electron-deficient core for stable planar perovskite solar cells with approaching 24% efficiency

Bin Liu, Yuqi Wang, Yanjie Wu, Zhongqi Liu, Shuhang Bian, Yuhong Zhang, Le Liu, Xinmeng Zhuang, Shuainan Liu, Zhichong Shi, Xue Bai, Lin Xu, Donglei Zhou, Biao Dong, Hongwei Song