The Antiperovskite-Type Oxychalcogenides Ae₃ Q[GeOQ₃ ] (Ae = Ba, Sr; Q = S, Se) with Large Second Harmonic Generation Responses and Wide Band Gaps.

ABSTRACT: Oxychalcogenides capable of exhibiting excellent balance among large second-harmonic generation (SHG) response, wide band gap (E_g ), and suitable birefringence (Δn) are ideal materials class for infrared nonlinear optical (IR NLO) crystals. However, rationally designing a new high-performance oxychalcogenide IR NLO crystal still faces a huge challenge because it requires the optimal orientations of the heteroanionic groups in oxychalcogenide. Herein, a series of antiperovskite-type oxychalcogenides, Ae₃ Q[GeOQ₃ ] (Ae = Ba, Sr; Q = S, Se), which were synthesized by employing the antiperovskite-type Ba₃ S[GeS₄ ] as the structure template. Their structures feature novel three-dimensinoal frameworks constructed by distorted [QAe₆

SUBMITTER: Cui S 

PROVIDER: S-EPMC9896038 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature