Citation: Cao, Wangzhu; Mei, Dajiang; Yang, Yi; Wu, YuanWang; Zhang, Lingyun; Wu, Yuandong; He, Xiao; Lin, Zheshuai; Huang, Fu Qiang (2019). From CuFeS2 to Ba6Cu2FeGe4S16: Rational Band Gap Engineering Achieves Large Second-Harmonic-Generation Together with High Laser Damage Threshold. Chemical Communications, , pp. -.