Rb2CdSi4S10: novel [Si4S10] T2-supertetrahedra-contained infrared nonlinear optical material with large band gap

A [Si 4 S 10 ] supertetrahedra containing infrared nonlinear optical material, Rb 2 CdSi 4 S 10 , with a wide band gap (4.23 eV), high LIDT (5 × AgGaS 2 ), and moderate SHG response (0.6 × AgGaS 2 ) is designed and fabricated using a flux method.