A5038252111- Crystal Structures and Properties
- Solid-state spectroscopy and crystallography
- Perovskite Materials and Applications
- Graphene research and applications
- Nonlinear Optical Materials Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Thermal properties of materials
- Dielectric materials and actuators
- Radiation Detection and Scintillator Technologies
- Electromagnetic wave absorption materials
- Nuclear Physics and Applications
- Inorganic Fluorides and Related Compounds
- Radiation Therapy and Dosimetry
- Advanced Sensor and Energy Harvesting Materials
- Crystal structures of chemical compounds
- Glass properties and applications
- Optical and Acousto-Optic Technologies
- Synthesis and properties of polymers
- Atomic and Subatomic Physics Research
- Graphene and Nanomaterials Applications
- Electric and Hybrid Vehicle Technologies
- Advanced Battery Technologies Research
- Geographic Information Systems Studies
- Solid State Laser Technologies
Fuzhou University
2021-2025
Fujian Institute of Research on the Structure of Matter
2021-2025
Chinese Academy of Sciences
2015-2025
University of Chinese Academy of Sciences
2025
Shenzhen Bay Laboratory
2023
Institute of High Energy Physics
2017-2020
China Spallation Neutron Source
2017-2020
Institute of Applied Technology
2015-2018
University of Science and Technology of China
2016-2018
Hefei Institutes of Physical Science
2015-2018
Birefringent crystals that can modulate the polarization of light play a significant role in modern optical devices including polarizing microscopes, isolators, and achromatic quarter-wave plates. To date, commercial birefringent are exclusively limited to purely inorganic compounds. Here we report new organic-inorganic hybrid halide, MLAPbBr4 (MLA=melamine), which features (110)-oriented layered perovskite structure. Although 6s2 lone-pair electrons Pb2+ cations stereochemically inert,...
Deep-UV nonlinear optical (NLO) materials have attracted much academic and technical attention due to their capability of producing coherent light wavelengths below 200 nm. As a well-known branch NLO materials, researchers obtained many deep-UV crystals with superior properties in π-conjugated system (such as borate systems carbonate systems). However, structural property limitations, the research developments encountered difficulties balancing properties. Recently, scientists started pay...
Common nonlinear optical (NLO) crystals consist of traditional functional building blocks with inherent limitation. Herein, inspired by (B3 O6 )3- inorganic block, we theoretically identified a new type organic and then successfully synthesized the first cyamelurate NLO crystal, Ba(H2 C6 N7 O3 )2 ⋅ 8 H2 O. To our surprise, constituent (H2 )- block is not in structurally optimal arrangement, but O exhibits excellent properties including wide band gap 4.10 eV, very large birefringence 0.24@550...
Birefringent materials are highly demanded for high-performance polarized optics. As compared with artificial anisotropic metamaterials, crystals have advantages of low optical losses and easy processing, but their birefringence is still limited. Herein, based on first-principles studies, we identified a new type functional anion units, (Hx C6 N9 )(3-x)- (x=0, 1, 2), then successfully synthesized crystal, namely, CsH2 ⋅H2 O (I), whose crystal structure consists (H2 )- anions. Remarkably, I...
Exploration of nonlinear optical (NLO) crystalline materials is a hot and continuing research topic in modern optoelectronics laser technology. Within this portfolio, the emerging organic–inorganic hybrid metal halides provide infinite opportunities due to their fascinating advantages inorganic frameworks organic molecules. Herein, by cooperatively combining second-order Jahn–Teller distorted octahedron [SbCl6] π-conjugated aromatic amine (N,N,4-trimethylaniline, C9H13N), non-centrosymmetric...
Birefringent crystals could modulate the polarization of light and are widely used as polarizers, waveplates, optical isolators, etc. To date, commercial birefringent have been exclusively limited to purely inorganic compounds such α-BaB2 O4 with birefringence about 0.12. Herein, we report a new hydrogen bonded supramolecular framework, namely, Cd(H2 C6 N7 O3 )2 ⋅8 H2 O, which exhibits exceptionally large up 0.60. best our knowledge, O is significantly larger than those all largest among...
Back-streaming neutrons through the incoming proton channel at spallation target station of China Spallation Neutron Source (CSNS) has been exploited as a white neutron beam line (so-called Back-n), and number spectrometers for nuclear data measurements have planned. With thick tungsten modest moderation by cooling water slices, is very intense which in order 5.0×106 n/cm2/s 80 m from an excellent energy spectrum spanning 1 eV to 100 MeV. In addition, time structure primary under different...
A new 2D layered hybrid pseudo-perovskite, MLASnCl 4 (MLA = melamine), shows a large birefringence of up to 0.294@550 nm and excellent air stability.
Birefringent crystals that can switch light polarization have important applications in optoelectronics. In the last decades, birefringence is mostly optimized by chemical strategies. Recently, switching physical means has attracted much attention. Here, this work reports observation of heat a 2D layered hybrid halide perovskite (C2 N3 H4 )2 PbCl4 ((C2 )+ =1,2,4-triazolium). This leads to significant change interference color for crystal plate under illumination orthogonal polarized light....
Abstract It is in great demand to discover new materials with large birefringence for the miniaturization of optical communication devices. In this work, a one‐dimensional hybrid halide perovskite, (C 6 N 10 H 8 )Pb 2 Br , obtained successfully through structural design dimension reduction from notable three‐dimensional perovskite CsPbBr 3 . Remarkably, exhibits significantly enhanced ∆ n = 0.42@550 nm, which largest among perovskites so far. Furthermore, its performance robust wide...
Comprehensive Summary Non‐π‐conjugated groups have recently emerged as excellent fundamental building blocks (FBUs) for UV nonlinear optical (NLO) crystals, due to their ability achieve wide transparency. However, generally high crystallographic symmetry often results in limited anisotropy, making few resultant crystals phase‐matchable the wavelength range. In this work, we introduce polar [NH(CH 2 SO 3 ) ] 2− dimer a novel non‐π‐conjugated FBU, and synthesize first NLO...
Abstract Exploring 2D nonlinear optical (NLO) materials that exhibit layer‐independence and in‐plane anisotropy of second‐harmonic generation (SHG) is great importance to the fundamental studies further development polarization‐sensitive optoelectronics. However, such exploration remains challenging because it requires corresponding bulk have broken inversion symmetry as well low‐lattice symmetry. Here, shown AgVP 2 Se 6 can be a novel NLO anisotropic material with experimental demonstration...
The Back-n white neutron source at China Spallation Neutron Source (CSNS) is designed specifically for nuclear data measurements and multidisciplinary applications. time of flight (TOF) method deployed to obtain a high resolution energy. In the normal operation mode CSNS there are two proton bunches with interval 410 ns in each pulse which has repetition frequency 25 Hz. Due superposition event distributions corresponding bunches, TOF measurement will be degraded by double-bunch...
Birefringent crystals are essential in the domains of linear and nonlinear optics that need light wave polarization control. Rare earth borate has become a popular study material for ultraviolet (UV) birefringence due to its short cutoff edge UV area. RbBaScB6O12, two-dimensional layered structure compound with B3O6 group, was effectively synthesized through spontaneous crystallization. The RbBaScB6O12 is shorter than 200 nm, experimental 0.139 @ 550 nm. Theoretical research indicates large...
The confined π-conjugated groups [PO 2 (NH) 3 (CO) ] help to achieve a good balance of SHG, bandgap, and birefringence.
Abstract Birefringent crystals have important applications in optoelectronics areas due to their ability modulate and polarize light. Despite increasing discovery of the birefringence potential new crystals, it remains a great challenge optimize both bandgap simultaneously. Herein, 1D chain‐like hybrid perovskite birefringent crystal designed by 3D‐to‐1D dimensional tailoring, (GAM) 2 PbI 7 ·H O (GAM = C 5 N 10 H ), is presented, showing enlarged 0.49@550 nm optical (2.48 eV). Consequently,...
Birefringence is an important linear optical property of anisotropic crystals that plays a significant role in regulating light polarization. A new bialkali–rare earth metal sulfate, NaRbY2(SO4)4 compound, consisting non-π-conjugated alkali metals and rare metal-centered dodecahedral YO8 has been synthesized. The structure analysis suggests the three-dimensional (3D) compound found to be attributable combination tetrahedral SO4 groups with Na+ Rb+ located cavities. ultraviolet, visible,...