Partial substitution induced structural transformation and enhanced nonlinear optical properties of Na2GaxIn6-xSe10 (x = 3, 3.76)

From CdPb8(SeO3)4Br10 to Pb3(TeO3)Br4: the first tellurite bromide exhibiting an SHG response and mid-IR transparency

“…11,18 and their derivatives (GaO 6 , GaO 3 F 3 , etc. ), [19][20][21] d 10 transition metals with large polar displacement (Zn 2+ , Cd 2+ , Hg 2+ ), 22,23 and SALP cations (Pb 2+ , Bi 3+ , Sn 2+ , Sb 3+ , etc.). 24,25 Some high-performance NLO materials have been explored, such as Pb 2 (SeO 3 )(NO 3 ) 2 (2 × KDP), 26 NaNbO(SeO 3 ) 2 (7.8 × KDP), 18 LiNbTeO 5 (17 × KDP), 27 Cd 2 Nb 2 Te 4 O 15 (31 × KDP), 28 β-BaTeW 2 O 9 (1.5 × KTP) 29 and TlSb 3 Te 2 O 12 (37.2 × KDP).…”

ACd4Ga5Te12 (A = K, Rb, Cs): Tellurides with a Strong Nonlinear Optical Response and Purple Emission

“…In addition, it is more difficult to investigate some metastable NCS compounds, as we cannot synthesize and evaluate their NLO performances. In recent years, some strategies have been proposed to obtain NCS compounds, including using known NCS structures as templates, element substitution, concentration-driven strategy, structural tolerance factor-guided strategy, etc. ,− Among them, the chemical substitution of known CS or NCS structures has been proven to be the most effective and simple strategy for designing new excellent IR NLO compounds. − Selecting an appropriate structural prototype is conducive to the realization of structure–performance regulation. Some examples with favorable NLO properties have been rendered here, encompassing Pb 4 SeBr 6 (structural prototype: CS PbBr 2 ), SrCdSiS 4 (structural prototype: CS SrGa 2 S 4 ), Sn 7 Br 10 S 2 (structural prototype: CS SnBr 2 ), [RbBa 2 Cl]­[Ga 4 S 8 ] (structural prototype: CS RbGaS 2 ), CuZnPS 4 (structural prototype: NCS AgGaS 2 ), Ba 3 Ge 2 O 4 Te 3 (structural prototype: NCS Ba 2 ZnGe 2 O 7 ), and Hg 3 P 2 S 8 (structural prototype: NCS Zn 3 P 2 S 8 ). ,− …”

{[In2S7]8–}∞ Chain and Isolated HgS4 Planar Unit Constructed One-Dimensional Pentanary Sulfide K2Ba7HgIn4S16 Exhibiting Nonlinear-Optical Activity

“…To address these issues, several strategies have been applied to design high-performance IR NLO materials. On the one hand, distorted MQ 4 (M = Ga, In, Si, Ge, Sn; Q = S, Se) tetrahedra are one type of famous NLO functional motifs . On the other hand, the search for d 10 metal Hg-based chalcogenides has become a hot topic due to their rich structures and physical properties. − For example, the A–N–M–Q (A = alkali metal; N = d 10 metal; M = main-group metal; Q = chalcogen) system achieves a good balance between large SHG responses and high LIDTs …”