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Your search keyword '"Li, Bing‐Xuan"' showing total 162 results
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162 results on '"Li, Bing‐Xuan"'

21. Ce(IO3)3F and Ce(IO3)2(NO3): Two Mixed-Anion Cerium Iodates with Good Nonlinear Optical and Birefringent Properties

Author

Ma, Nan, Huang, Yu, Hu, Chun-Li, Zhang, Ming-Zhi, Li, Bing-Xuan, and Mao, Jiang-Gao

Abstract

Two new mixed-anion cerium iodates, namely, Ce(IO3)3F and Ce(IO3)2(NO3), have been rationally designed through the integration of hybrid anionic functional building blocks (FBBs). The structure of Ce(IO3)3F features a novel [Ce(IO3)3F] bilayer, and the material exhibits large birefringence (0.225 @546 nm). The structure of Ce(IO3)2(NO3) features [Ce3(IO3)6]3+triple layers that are further linked by planar NO3–units. Ce(IO3)2(NO3) shows a moderate SHG response (1 × KDP) and a high laser-induced damage threshold value (22 × AgGaS2). This work demonstrates that the rich coordination geometries of cerium cations facilitate tuning of the structures of related compounds through modulating anionic FBBs.

Published
2023
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31. Achieving Large Second Harmonic Generation Effects via Optimal Planar Alignment of Triangular Units.

Author

Li, Xin‐Yu, Wei, Qi, Hu, Chun‐Li, Pan, Jie, Li, Bing‐Xuan, Xue, Zhen‐Zhen, Li, Xiao‐Yu, Li, Jin‐Hua, Mao, Jiang‐Gao, and Wang, Guo‐Ming

Subjects
SECOND harmonic generation, POTASSIUM dihydrogen phosphate, CRYSTAL growth, SPATIAL arrangement, LASER damage, HARMONIC generation, BIREFRINGENCE
Abstract

Trigonal planar units with large polarizability anisotropy and high physicochemical stability are ideal structural units for exploring nonlinear optical (NLO) materials. Integrating the merits of two types of triangular‐like moieties, a family of second‐order NLO‐active hybrid halides, MATX (X = Cl (1), Br (2), and I (3)), are achieved. MATX crystallizes in a nonpolar space group of P6¯$P\overline 6 $2c but exhibits the optimal spatial arrangement and superior NLO performance. The low coordination planar trigonal AgX3 units enable segregation in layers of the three‐winged propeller‐like Me3TPA units. All of the layers are packed in a perfect parallel fashion, making the functional materials exhibit superior NLO performances, including the phase matchable behavior with strong SHG responses (6.2/1, 6.5/2, and 7.6/3 times that of potassium dihydrogen phosphate), large birefringence (0.232/1, 0.252/2 and 0.260/3 at 1064 nm), high laser damage threshold, wide transparent window, and easiness of crystal growth. The first‐principles calculations reveal that the coexistence of strong linear and nonlinear optical properties are ascribed to the synergistic effect of the trigonal moieties. This study points out a useful path for the rational design of excellent NLO materials. [ABSTRACT FROM AUTHOR]

Published
2023
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41. LaBS3 revisited: a promising mid-infrared nonlinear optical material.

Author

Han, Ya-Xiang, Hu, Chun-Li, Fang, Zhi, Chen, Qian-Qian, Li, Bing-Xuan, Lin, Yuan, and Mao, Jiang-Gao

Abstract

Thioborates are considered new potential mid-infrared nonlinear optical (NLO) crystals with wide band gaps and large second-harmonic generation (SHG) coefficients. Despite the fact that many rare-earth thioborates are structurally non-centrosymmetric, their SHG properties have only been studied very recently and their mid-infrared (Mid-IR) nonlinear optical properties have not yet been studied. In this work, we provide a new synthetic route for LaBS3 (LBS) by solid state reactions of La2S3, B and S with Li2S as flux, and we further study its thermal and optical properties, and theoretically explore the origin of its IR nonlinear optical properties by DFT calculations. Remarkably, LBS possesses balanced properties required for a good Mid-IR NLO crystal, a large SHG effect (1.2 × AgGaS2@2.05 μm – the largest among all known ortho-thioborates), a high laser induced-damage threshold (14 times of AgGaS2), a wide band gap (3.18 eV), a wide infrared transmission range (0.35–25 μm) and high thermal stability. Theoretical calculations suggest that its large SHG effect originates from the synergy effects of the π-conjugated [BS3]3− anions (41.82%) and the [LaS9]15− groups (58.18%). [ABSTRACT FROM AUTHOR]

Published
2022
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43. Cd2(IO3)(PO4) and Cd1.62Mg0.38(IO3)(PO4): metal iodate-phosphates with large SHG responses and wide band gaps.

Author

Chen, Qian-Qian, Hu, Chun-Li, Yao, Li-Jia, Chen, Jin, Cao, Ming-Yang, Li, Bing-Xuan, and Mao, Jiang-Gao

Subjects
BAND gaps, METALS
Abstract

The first NLO-active metal iodate-phosphates, namely, Cd2(IO3)(PO4) and Cd1.62Mg0.38(IO3)(PO4) (1 and 2), with three types of NLO groups, have been reported. 1 and 2 are isostructural and the structure of 1 features a 3D network formed by the Cd4(IO3)8/4(PO4)6/3 groups. 1 and 2 with strong SHG signals of 4 × and 3.5 × KH2PO4 are promising SHG materials in the visible region. [ABSTRACT FROM AUTHOR]

Published
2022
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44. Cd4REO(BO3)3 (RE = Sm, Eu, Tb): three new cadmium–rare earth oxyborates with both good NLO and luminescence properties.

Author

Cao, Ming-Yang, Hu, Chun-Li, Chen, Peng-Fei, Wang, Qian, Li, Bing-Xuan, Lin, Yuan, and Mao, Jiang-Gao

Subjects
RARE earth metals, SAMARIUM, NONLINEAR optical materials, LUMINESCENCE
Abstract

Three nonlinear optical materials Cd4REO(BO3)3 (RE = Sm, Eu, Tb) have been synthesized through high-temperature solid-state reactions. In their crystal structures, Cd(1)O8 and Cd(2)O6 polyhedra are interconnected via sharing edges and corners into a 3D anion framework with two types of tunnels based on 4- and 7-membered rings; the BO3 groups are grafted into the above-mentioned types, creating new tunnels based on Cd4B3 seven-membered rings, which are filled by RE3+ cations. Powder SHG measurements revealed that the Cd4REO(BO3)3 (RE = Sm, Eu, Tb) samples display SHG signals that are approximately 1.2, 5.6 and 1.5 times that of the KDP sample. In addition, Cd4EuO(BO3)3 and Cd4TbO(BO3)3 emit red and green light, respectively. The lifetime of the Eu(5D0) state for λex,em = 464, 610 nm in Cd4EuO(BO3)3 is measured to be about 1.43 ms whereas the lifetime of the Tb(5D4) state for λex,em = 376, 543 nm in Cd4TbO(BO3)3 is measured to be about 1.01 ms. [ABSTRACT FROM AUTHOR]

Published
2022
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