Detection Range Extended 2D Ruddlesden-Popper Perovskite Photodetectors Yiyi Pan, Haoliang Wang, Xiaoguo Li, Xin Zhang, Fengcai Liu, Meng Peng, Zejiao Shi, Chongyuan Li, Haijuan Zhang, Zhenhua Weng, Meenakshi Gusain, Huabao Long, Dapeng Li, Jiao Wang, yiqiang zhan and Lirong Zheng Abstract Two-dimensional (2D) perovskite materials are promising platform to construct high performance photodetectors due to their novel structure, high stability, resistance to ion migration and decent light...