Low-Cost N,N″-Bicarbazole-Based Dopant-Free Hole-Transporting Materials for Large-Area Perovskite Solar Cells

Chengrong Yin, Jianfeng Lu, Yachao Xu, Yikai Yun, Kai Wang, Jiewei Li, Liangcong Jiang, Jingsong Sun, Andrew D. Scully, Fuzhi Huang, Jie Zhong, Jianpu Wang, Yi Bing Cheng, Tianshi Qin, Wei Huang