High-Performance Inverted Planar Perovskite Solar Cells Enhanced by Thickness Tuning of New Dopant-Free Hole Transporting Layer

Xue Lai, Mengzhen Du, Fei Meng, Gongqiang Li, Wenhui Li, Aung Ko Ko Kyaw, Yaping Wen, Chungen Liu, Haibo Ma, Ren Zhang, Dongyu Fan, Xiao Guo, Yunhao Wang, Hongru Ji, Kai Wang, Xiao Wei Sun, Jianpu Wang, Wei Huang