Stereochemically active lone-pair-driven giant enhancement of birefringence from three-dimensional CsZn₄Ga₅Se₁₂ to two-dimensional CsZnAsSe₃

Inorganic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(11), P. 3367 - 3374

Published: Jan. 1, 2023

A novel 2D quaternary thioarsenate, CsZnAsSe 3 , was obtained by a stereochemically active lone pair (SCALP) induction strategy, which exhibits 28-fold increase in birefringence compared to the known 3D framework CsZn 4 Ga 5 Se 12 .

Language: Английский

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Recent progress in borate-based short-wavelength nonlinear optical crystals with boron–oxygen skeleton modification

Materials Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 7(20), P. 4683 - 4692

Published: Jan. 1, 2023

Recent progress and prospects of borate-based short-wavelength NLO crystals with modified boron-oxygen skeleton have been surveyed analyzed focusing on the crystal structure features, cutoff edges, birefringence SHG responses.

Language: Английский

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Dual-Anion Strategy Induces Dual Enhancement Toward Ultrashort Phase-Matching Wavelength in Deep-UV Transparent d⁰ Transition Metal Oxyfluorides

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1094 - 1102

Published: Feb. 23, 2024

The d0 transition metal oxides are the most commonly used nonlinear optical (NLO) materials in visible light region; however, their limited band gaps seriously hinder application ultraviolet (UV) and deep-ultraviolet (DUV) regions. Achieving double enhancement of gap birefringence by regulating anionic units helps to push phase-matching (PM) wavelength into UV/DUV Herein, starting from famous NLO material LiNbO3, a "dual-anion strategy" is proposed regulate [NbO6–xFx] octahedra, predicted Li2Nb2O6–xF2x·(LiF)y (x = 1, 2, 4; y 0, 2) exhibit dual-property magnification wide (3.82–6.26 eV, 1–3 eV larger than LiNbO3) extraordinary (0.100–0.322, 1–4 times that LiNbO3), along with strong second harmonic generation (SHG) response 2.6–6.2 × KDP. Remarkably, Li2NbOF5-I LiNbOF4-II have extremely short PM (λPM 209 nm) ever reported for oxyfluorides. Further analysis uncovers fluorinated modification edges increase octahedral anisotropy [NbO6−xFx] groups main reasons enhanced ability.

Language: Английский

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非线性光学数据库: 理论预测助力材料的快速发现

Science China Materials, Journal Year: 2023, Volume and Issue: 66(11), P. 4473 - 4479

Published: Oct. 16, 2023

Language: Английский

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Two Hydroxyfluorooxoborates Achieving Deep‐Ultraviolet Cutoff Edges and Moderate Birefringence by Assembling Multi‐Anionic Groups

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(33)

Published: April 15, 2024

Abstract Assembling multi‐anionic groups is conducive to utilizing respective advantage achieve the enhancement of optical performance. Two new hydroxyfluorooxoborates, Ama 2‐Rb 2 B 3 O F 4 (OH) and K 8 Cs 15 14 7 20 ⋅ H with [B (OH)] six‐membered rings were synthesized for first time. The title compounds exhibit short ultraviolet cutoff edges (<200 nm) possesses a moderate experimental refractive index difference 0.051@546 nm.

Language: Английский

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Target-Oriented Synthesis of Borate Derivatives Featuring Isolated [B₃O₃] Six-Membered Rings as Structural Features

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(23), P. 9209 - 9216

Published: May 31, 2023

Borates provide an excellent platform for investigating the optical nonlinearity and linearity of crystals as photoelectric functional materials. In our work, borate derivatives with isolated [B3O3] six-membered rings structural features are preferred system due to their simple units properties. Herein, by utilizing target-oriented synthesis, a series derivatives, A2[B3O3F4(OH)] (A= NH4, Rb, Cs) (ABOFH), K2.3Cs0.7B3O3F6 (KCsBOF), Cs3[B3O3(OH)3]Cl3 (CsBOHCl), novel heteroanionic groups containing [BOxF4–x] (x = 0–3) and/or [BO2(OH)] were obtained. ABOFH, KCsBOF, CsBOHCl construct different two-dimensional pesudolayers featuring [B3O3F4(OH)], [B3O3F6], [B3O3(OH)3] units, respectively. Also, properties arrangement information these anionic studied. Among total five compounds, (NH4)2[B3O3F4(OH)] enlarged birefringence sufficient band gaps screened out promising birefringent optimally aligned configuration birefringence-active units. The successful results synthesis indicate more profound conclusion that now has diversified chemistry, effective strategy was proposed modify species optimize performance crystals.

Language: Английский

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K₂PbB₅P₃O₁₇: A Mixed-Coordinated Borophosphate with Enhanced Birefringence Driven by the [B₂O₅] Unit

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Mixed-coordinated borophosphates containing π-conjugated [BO3] and non-π-conjugated [BO4] [PO4] tetrahedra have been a research hot spot benefiting from their diverse structures the presentation of pre-eminent optical performances. Through high-temperature solution method, new mixed-coordinated borophosphate K2PbB5P3O17 was synthesized. This compound exhibits an unprecedented [B5P3O21] fundamental building block consisting apex-sharing [B3O7], [BO4], units, possessing short ultraviolet cutoff edge 234 nm as well moderate birefringence (0.045@1064 nm). Compared with tetra-coordinated KPbBP2O8 same elemental composition, achieves great enhancement induced by introduction planar [B2O5] unit.

Language: Английский

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Cation tuning in anionic framework hydroborates: tailored deep-ultraviolet optical crystals with large birefringence

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

3D network structure of LiB5O7(OH)2 (I), (NH4)2B10O14(OH)4·H2O (II), (NH4)0.5K1.5B10O14(OH)4·H2O (III) and (NH4)0.7Cs1.3B10O14(OH)4·H2O (IV).

Language: Английский

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K₅[B₃O₃F₄(OH)]₂(NO₃): the first hydroxyfluorooxoborate-nitrate with a short ultraviolet cutoff edge and large birefringence

Dalton Transactions, Journal Year: 2023, Volume and Issue: 52(38), P. 13492 - 13496

Published: Jan. 1, 2023

The first hydroxyfluorooxoborate-nitrate, K 5 [B 3 O F 4 (OH)] 2 (NO ), with a short ultraviolet cutoff edge and large birefringence was synthesized via the solution evaporation method.

Language: Английский

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PbTeB₄O₉: a lead tellurium borate with unprecedented fundamental building block [B₄O₁₀] and large birefringence

Chemical Communications, Journal Year: 2023, Volume and Issue: 60(3), P. 340 - 343

Published: Nov. 28, 2023

A new borate, PbTeB 4 O 9 , with unprecedented 2D infinite [TeB ] ∞ layers was obtained; it possesses a calculated birefringence of 0.099 at 1064 nm.

Language: Английский

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