Quadratically Nonlinear Photodetector Based on InSe/Si p–n Heterojunction. - Zhang, Yu; Jia, Zhuonan; Chen, Xiaoqing; Zhang, Yong; Zhang, Mingwen; Wang, Jianguo; Liu, Liang; Fang, Liang; Zhao, Chenyang; Mei, Ting; Zhao, Jianlin; Gan, Xuetao (Advanced Functional Materials, 2026)