Disconnection Enhances the Second Harmonic Generation Response: Synthesis and Characterization of Ba23Ga8Sb2S38

Pb7F12Cl2: a promising infrared nonlinear optical material with high laser damage threshold

This study reports, for the first time, the second-harmonic generation (SHG) property of Pb₇F₁₂Cl₂ as a promising infrared nonlinear optical (NLO) material.

ABaSbQ3 (A = Li, Na; Q = S, Se): diverse arrangement modes of isolated SbQ3 ligands regulating the magnitudes of birefringences

The interrelation of arrangement modes of isolated SbQ₃ ligands on structures and birefringences has been systematically studied in series of chalcogenides.

Structural modulation induced by MIIIA metals in Ba3MQ4X (M = Al, Ga, In; Q = S, Se; X = Cl, Br): an experimental and computational analysis

The optical properties of Ba₃MQ₄X (M = Al, Ga, In; Q = S, Se; X = Cl, Br) have been studied and their structures have been compared.

Li7 Cd4.5 Ge4 Se16 and Li6.4 Cd4.8 Sn4 Se16 : Strong Nonlinear Optical Response in Quaternary Diamond-Like Selenide Networks

Two new selenides with diamond-like structures, Li₇ Cd_4.5 Ge₄ Se₁₆ and Li_6.4 Cd_4.8 Sn₄ Se₁₆ , were synthesized by using a conventional high-temperature solid-state reaction method. They crystallize in the space group Pna2₁ (no. 33) of the orthorhombic system. Their three-dimensional frameworks consist of corner-sharing LiSe₄ , CdSe₄ , and MSe₄ (M=Ge, Sn) tetrahedra. These two compounds exhibit strong powder second-harmonic generation responses that are about 1.2 and 2.5 times that of the benchmark AgGaS₂ at a laser wavelength of λ=2.09 μm, and also demonstrate type I phase-matchable behavior. The optical bandgaps were determined to be 2.18 and 1.95 eV for Li₇ Cd_4.5 Ge₄ Se₁₆ and Li_6.4 Cd_4.8 Sn₄ Se₁₆ , respectively. Furthermore, these two materials exhibit congruent melting behavior at rather low temperatures of 985 and 1060 K, respectively, which makes bulk single crystal growth by using the Bridgman-Stockbarger method possible. Our study indicates that these two materials show advantages over the traditional IR NLO material CdSe and are promising for practical applications.

Structural insights into T2-cluster-containing chalcogenides with vertex-, edge- and face-sharing connection modes of NaQ6 ligands: Na3ZnMIIIQ4 (MIII = In, Ga; Q = S, Se)

New series of T₂-cluster-containing chalcogenides exhibiting the novel connection mode of NaS₆ ligands and torsional adjacent T₂-clusters were reported.

Experimental and theoretical studies on the NLO properties of two quaternary non-centrosymmetric chalcogenides: BaAg2GeS4and BaAg2SnS4

Two new phase-matchable MFIR NLO materials, BaAg₂MS₄(M = Ge, Sn), with a compressed chalcopyrite-like structure are reported. Remarkably, they exhibit a good balance between strong SHG responses and high LIDTs.

NaBaMIIIQ3 (MIII = Al, Ga; Q = S, Se): first quaternary chalcogenides with isolated edge-sharing (MIII2Q6)6− dimers

New series of quaternary chalcogenides with firstly discovered isolated edge-sharing (MIII2Q₆)⁶⁻ dimers showing obvious optical anisotropy were reported.

A novel 2-D Mn selenidostannate(iv) incorporating high-nuclear Mn clusters with spin canting behavior

A solvothermal reaction of SnCl₄·5H₂O, Mn and Se in ethanolamine (Hea) yielded a novel 2-D Mn selenidostannate(iv) [Mn₇(ea)₆(SnSe₄)₂]_n (1), which not only provides the first example of the incorporation of a hepta-nuclear Mn cluster [Mn₇(ea)₆]⁸⁺ into a selenidostannate(iv) framework, but also shows unusual spin canting behavior.

Centrosymmetric to noncentrosymmetric structural transformation of new quaternary selenides induced by isolated dimeric [Sn2Se4] units: from Ba8Ga2Sn7Se18to Ba10Ga2Sn9Se22

An interesting centrosymmetric to noncentrosymmetric structure transformation from Ba₈Ga₂Sn₇Se₁₈to Ba₁₀Ga₂Sn₉Se₂₂induced by isolated dimeric [Sn₂Se₄] units was reported.

Two excellent phase-matchable infrared nonlinear optical materials based on 3D diamond-like frameworks: RbGaSn2Se6 and RbInSn2Se6

Two new excellent phase-matchable MFIR NLO materials RbXSn₂Se₆ (X = Ga, In) with 3D diamond-like framework structures are reported.

Thioborates: potential nonlinear optical materials with rich structural chemistry

This review summarizes thioborates and their structural motifs ranging from zero-dimension to three-dimension. The most commonly observed building units of these examples are planar-triangle BS₃ and tetrahedron BS₄. Thioborates possess advantages with respect to their structural diversity, optical nonlinearity, laser-induced damage threshold and transparency range, and represent potentially a rich supply of new nonlinear optical materials.

Syntheses and characterization of three new sulfides with large band gaps: acentric Ba4Ga4SnS12, centric Ba12Sn4S23 and Ba7Sn3S13

Three new sulfides with large band gaps, NCS Ba₄Ga₄SnS₁₂, CS Ba₁₂Sn₄S₂₃ and Ba₇Sn₃S₁₃ were synthesized for the first time. Ba₄Ga₄SnS₁₂ exhibits a desired balance between the band gap (2.90 eV) and the SHG intensity (34 × KDP).

Tailored synthesis of nonlinear optical quaternary chalcohalides: Ba4Ge3S9Cl2, Ba4Si3Se9Cl2 and Ba4Ge3Se9Cl2

Three nonlinear optical chalcohalides, Ba₄Ge₃S₉Cl₂, Ba₄Si₃Se₉Cl₂ and Ba₄Ge₃Se₉Cl₂, have been synthesized by a tailored synthetic approach based on [M₃Q₉]⁶⁻ (M = Ge, Q = S; M = Si/Ge, Q = Se) building units.

A simple route to complex materials: the synthesis of alkaline earth – transition metal sulfides

A simple, low-temperature synthesis of a family of alkaline earth metal chalcogenide thin films is reported.

Wide band gap design of new chalcogenide compounds: KSrPS4 and CsBaAsS4

KSrPS₄ and CsBaAsS₄ were successfully synthesized. The results of diffuse reflectance measurements revealed that KSrPS₄ and CsBaAsS₄ possess wide band gaps, which are larger than 3.62 eV and 2.86 eV, respectively.

Syntheses, structures, and properties of sulfides constructed by SbS4teeter-totter polyhedra: Ba3La4Ga2Sb2S15and BaLa3GaSb2S10

Two new pentanary sulfides Ba₃La₄Ga₂Sb₂S₁₅(1) and BaLa₃GaSb₂S₁₀(2) have been discovered.

Li2CdGeSe4and Li2CdSnSe4: biaxial nonlinear optical materials with strong infrared second-order responses and laser-induced damage thresholds influenced by photoluminescence

Two new biaxial, diamond-like semiconductors, Li₂CdGeSe₄and Li₂CdSnSe₄, were preparedviahigh-temperature, solid-state synthesis.

Sb-Based antiferromagnetic oxychlorides: MSb2O3(OH)Cl (M = Mn, Fe, Co) with 2D spin-dimer structures

Three new Sb-based antiferromagnetic oxychlorides: MnSb₂O₃(OH)Cl (1), FeSb₂O₃(OH)Cl (2), and CoSb₂O₃(OH)Cl (3) have been synthesized by using hydrothermal reaction methods. Their crystal structures are isostructural and incorporate two types of structural units: sphenoid SbO₄ polyhedra and M₂O₈Cl₂ (M = Mn, Fe, Co) dimers, that share edges forming a two dimensional (2D) MSb₂O₃(OH)Cl network. The neutral MSb₂O₃(OH)Cl 2D layers are arranged from ABAB-type for compounds 1 and 2 to AA'B'B-type for 3 with smaller cation radii. Magnetic measurements show that 1 belongs to an antiferromagnetic material, while 2 and 3 have weak ferromagnetic properties with unsaturated ferromagnetism originating from spin-canting below the transition temperature. In addition, the optical absorption band gaps were determined to be 3.8, 2.4, and 3.6 eV for 1, 2, and 3, respectively. This work demonstrates that utilizing both halide ions and lone-pair elements simultaneously in one structure is a feasible and practical route to reduce framework connectivity in order to synthesize new low-dimensional oxyhalides.

Facile Hydrazine-Hydrothermal Syntheses and Characterizations of Two Quaternary Thioarsenates(III): Two-Dimensional SrAg4 As2 S6 ⋅2 H2 O and One-Dimensional BaAgAsS3

Two new quaternary thioarsenates(III), SrAg4 As2 S6 ⋅2 H2 O (1) and BaAgAsS3 (2), have been prepared through a hydrazine-hydrothermal method at low temperature. Compound 1 possesses a two-dimensional (2D) layer network, while compound 2 features a one-dimensional (1D) column structure. The detailed structure analysis indicates that Sr(2+) and Ba(2+) cations have different directing effects on the structures of thioarsenates(III). Both experimental and theoretical studies demonstrate that compounds 1 and 2 are narrow-gap semiconductors. Our success in synthesizing these two quaternary thioarsenates(III) proves that the hydrazine-hydrothermal technique is a powerful yet facile synthetic method for exploring new complex chalcogenides with diverse crystal structures and interesting physical properties.

BaCdSnS4and Ba3CdSn2S8: syntheses, structures, and non-linear optical and photoluminescence properties

Good non-linear optical performances and promising photoluminescence properties for the title compounds were systemically reported for the first time.