Rational design of a new chalcogenide with good infrared nonlinear optical performance: SrZnSnS₄

Abstract

The new nonlinear optical material SrZnSnS4 is a two-dimensional layer structure with a large band gap (3.37 eV). The orderly arrangement of [ZnS4]6− and [SnS4]4− groups mainly contribute to the second harmonic generation effect (∼LiGaS2).

SrZnGeS4: A Dual‐Waveband Nonlinear Optical Material with a Transparency Spanning UV/Vis and Far‐IR Spectral Regions

“…The GeÀ S bond is shorter than ZnÀ S; for instance, Ge1À S and Ge2À S vary over the range of 2.195-2.222 and 2.181-2.228 Å, respectively, which is in good agreement with values reported for Li 4 MgGe 2 S 7 (2.172-2.295 Å) [18] and Na 2 ZnGe 2 S 6 (2.162-2.265 Å). [19] Zn1À S and Zn2À S vary over the ranges of 2.286-2.396 and 2.291-2.396 Å, respectively, which is in good agreement with values reported for SrZnSnS 4 (2.300-2.399 Å), [9] and α-Li 2 ZnGeS 4 (2.35 Å). [20] As usual, Sr 2 + is 8fold coordinated and the SrÀ S distances vary over the range of 3.073-3.149 Å (Figure S2b).…”

“…AeM II M IV Q 4 , where Ae=alkaline earth metal; M II =Zn, Cd, Hg; M IV =Si, Ge, Sn; and Q=S, Se, is a very interesting family. Studies show that the NCS members of this family crystallize into either the Fdd 2 or polar Ama 2 space groups [6–14] . The primary building units of these structures are MQ 4 tetrahedra centred around either +2 cations (Zn 2+ , Cd 2+ , and Hg 2+ ) or +4 cations (Ge 4+ and Sn 4+ ).…”

Structural modification from centrosymmetric Rb4Hg2Ge2S8 to noncentrosymmetric (Na3Rb)Hg2Ge2S8: mixed alkali metals strategy for infrared nonlinear optical material design

“…17 Under the guidance of these ideas, high-performance IR NLO materials with tetrahedron [MQ 4 ] n − as the NLO functional motif have been extensively studied, such as BaGa 4 Q 7 (Q = S, Se), 18,19 BaGa 2 MQ 6 (M = Si, Ge; Q = S, Se), 20 M II 3 P 2 S 8 (M II = Zn, Hg), 21,22 and AM II M IV Q 4 (A = Eu, Sr, Ba; M II = Mn, Zn, Cd, Hg; M IV = Si, Ge, Sn; Q = S, Se). 23–28 A common strategy for broadening band gaps is introducing alkali or alkaline earth metals to these compounds. However, the interaction between alkali or alkaline earth metal cations and anions ( i.e.…”

Infrared nonlinear optical sulfide CsCd4In5S12 exhibiting large second harmonic generation response

“…The promising IR-NLO materials for applications should satisfy the following conditions: a high SHG coefficient, a large LIDT, a wide IR transmission range, phase matching behavior and high thermal stability. [19][20][21][22][23][24][25][26] However, it is difficult to maintain the balance among the above properties, which encourages the development of new structural design strategies for highperformance IR-NLO materials. Fundamental building units (FBUs), such as d 10 cationcentred tetrahedral anionic groups ([CdS 4 ] 6À , [HgS 4 ] 6À , [InS 4 ] 5À , [GaS 4 ] 5À , [GeS 4 ] 4À , etc.…”

“…The promising IR-NLO materials for applications should satisfy the following conditions: a high SHG coefficient, a large LIDT, a wide IR transmission range, phase matching behavior and high thermal stability. 19–26 However, it is difficult to maintain the balance among the above properties, which encourages the development of new structural design strategies for high-performance IR-NLO materials.…”