Tin Chalcohalide Sn11(PS4)4I10 Obtained by Structural-template-oriented Synthesis: Exhibiting Balanced Infrared Nonlinear Optical Performance

Abstract

Among infrared (IR) nonlinear optical (NLO) materials, metal chalcohalides have become prominent because of their well-balanced performance and are widely applied in optoelectronics, communications, and sensor technology. Structural-template-oriented synthesis is an important method in the exploration of metal chalcohalides, mainly focusing on anion/cation substitution, co-substitution and structure prediction. Herein, a novel tin chalcohalide, Sn11(PS4)4I10 (SPSI), have been successfully obtained via structural-template-oriented synthesis, utilizing the excellent and suitable structural template Pb2BO3X (X = halogens) family. SPSI satisfies the requirements of an excellent IR NLO material as a balanced-performance pentagonal candidate, including a moderate second-harmonic generation (SHG) response (0.8 × AGS), a wide IR transparency window (0.46-17.6 μm), a suitable Δnobv. (0.068 at 546nm) and considerable laser-induced damage threshold (LIDT) (3.3 × AGS).