Supporting Information Optically Stimulated Synaptic Devices Based on the Hybrid Structure of Silicon Nanomembrane and Perovskite Lei Yin a , Wen Huang a , Rulei Xiao b , Wenbing Peng a , Yiyue Zhu a , Yiqiang Zhang a,c , Xiaodong Pi a,* and Deren Yang a,* a State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China b National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China c School of Materials Science and Engineering, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, Henan 450001, China * Corresponding authors: Xiaodong Pi (email: xdpi@zju.edu.cn), Deren Yang (email: mseyang@zju.edu.cn)