supported by the National Natural Science Foundation of China(Nos.81971744,U1932107,91859101,and 11304220);the Natural Science Foundation of Tianjin(Nos.2021FJ-0009 and 19JCZDJC34000).
Near infrared-II(NIR-II, 1 000-1 700 nm) imaging with high penetration tissue depth and signal-noise ratio has attracted wide interest in biomedicine. As a two-dimensional(2D) material with narrow band gap, the band s...