Citation: Shi, Shuangshuang; Lin, Chensheng; Yang, Guangsai; Cao, Liling; Li, Bingxuan; Yan, Tao; Luo, Min; Ye, Ning (2020). A2Bi2(SeO3)3F2 (A = K and Rb): Excellent Mid-Infrared Nonlinear Optical Materials with Both Strong SHG Responses and Large Band Gaps. Chemistry of Materials, , pp. -.