41. H. Hong, J.C. Zhang, J. Zhang, R.X. Qiao, F.R. Yao, Y. Cheng, C.C. Wu, L. Lin, K.C. Jia, Y.C. Zhao, Q. Zhao, P. Gao, J. Xiong, K.B. Shi, D.P. Yu, Z.F. Liu, S. Meng, H.L. Peng, K.H. Liu, Ultrafast Broadband Charge Collection from Clean Graphene/CH3NH3PbI3 Interface, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 140, 14952 (2018).