A5101530700- 2D Materials and Applications
- Perovskite Materials and Applications
- Graphene research and applications
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Per- and polyfluoroalkyl substances research
- Ionic liquids properties and applications
- Photonic and Optical Devices
- Photorefractive and Nonlinear Optics
- Liquid Crystal Research Advancements
- MXene and MAX Phase Materials
- Advanced Fiber Laser Technologies
- Atmospheric Ozone and Climate
- Metamaterials and Metasurfaces Applications
- Crystallography and molecular interactions
- Quantum Information and Cryptography
- Crystallization and Solubility Studies
- Mechanical and Optical Resonators
- X-ray Diffraction in Crystallography
- Advanced Materials and Mechanics
- Carbon Dioxide Capture Technologies
- Metal-Organic Frameworks: Synthesis and Applications
- Spectroscopy and Quantum Chemical Studies
- Atmospheric chemistry and aerosols
- Quantum optics and atomic interactions
Changchun Institute of Optics, Fine Mechanics and Physics
2020-2025
Chinese Academy of Sciences
2007-2025
University of Chinese Academy of Sciences
2020-2025
Beijing Technology and Business University
2021-2024
Liaoning University of Traditional Chinese Medicine
2024
Beijing Forestry University
2023
Fudan University
2015-2021
State Key Laboratory of Surface Physics
2018-2021
Jiangxi University of Traditional Chinese Medicine
2021
Xiamen University
2017-2020
Grain boundaries in as-grown polycrystalline MoS2 monolayers are revealed by second-harmonic-generation microscopy. Through the anisotropic polarization pattern and phase interference at grain boundary, edge termination boundary types identified. Statistical analysis on hundreds of grains shows that grain-boundary formation is driven kinetics can be nicely described attachment growth model.
Atomic thin transition-metal dichalcogenides (TMDs) are considered as an emerging platform to build next-generation semiconductor devices. However, date most devices still based on exfoliated TMD sheets a micrometer scale. Here, novel chemical vapor deposition synthesis strategy by introducing multilayer (ML) MoS2 islands improve device performance is proposed. A four-probe method applied confirm that the contact resistance decreases one order of magnitude, which can be attributed conformal...
For centrosymmetric materials such as monolayer graphene, no optical second-harmonic generation (SHG) is generally expected, because it forbidden under the electric-dipole approximation. Yet we observe a strong, doping-induced SHG from with its highest strength comparable to electric-dipole-allowed in noncentrosymmetric 2D materials. This novel has nature of an electric-quadrupole response, arising effective breaking inversion symmetry by dressing in-plane photon wave vector. More...
Abstract Defect density is one of the most significant characteristics perovskite single crystals (PSCs) that determines their optical and electrical properties, but few strategies are available to tune this property. Here, we demonstrate voltage regulation an efficient method defect density, as well properties PSCs. A three-step carrier transport model MAPbBr 3 PSCs proposed explore mechanism dynamics via applied bias. Dynamic steady-state photoluminescence measurements subsequently show...
Abstract Grains and grain boundaries play key roles in determining halide perovskite‐based optoelectronic device performance. Halide perovskite monocrystalline solids with large grains, smaller boundaries, uniform surface morphology improve charge transfer collection, suppress recombination loss, thus are highly favorable for developing efficient solar cells. To date, strategies of synthesizing high‐quality thin monocrystals (TMCs) cell applications still limited. Here, by combining the...
Two dimensional (2D) semiconductor materials of transition-metal dichalcogenides (TMDCs) manifest many peculiar physical phenomena in the light-matter interaction. Due to their ultrathin property, strong interaction with light and robust excitons at room temperature, they provide a perfect platform for studying physics coupling low dimension temperature. Here we report between 2D Tamm plasmon polaritons (TPPs). We observe Rabi splitting about 54 meV temperature by measuring angle resolved...
A novel optical second harmonic generation arises from the stacking order of three centrosymmetric graphene monolayer sheets.
Van der Waals heterostructures (vdWHs) based on two-dimensional (2D) materials are being studied extensively for their prospective applications in photodetectors. As the pristine WSe2/MoTe2 heterostructure is a type I (straddling gap) structure, it cannot be used as photovoltaic device theoretically, although both WSe2 and MoTe2 have excellent photoelectric properties. The Fermi level of p-doped close to its valence band. can perform because built-in electric field appears at interface...
The nanostructure of the designed cyano-based deep eutectic solvents was elucidated by experimental characterization, quantum mechanical calculations, and molecular dynamics simulations.
In this study, a convenient and effective method for determination of perfluoroalkyl substances (PFASs) in infant formula was developed based on novel dispersive solid-phase extraction using deep eutectic solvent-functionalized amorphous UiO-66 (DES/aUiO-66) as sorbent. The synthesis materials could be achieved without the use complex environmentally unfriendly procedures. Parameters were systematically investigated to establish simple, fast, efficient green pretreatment method. demonstrated...
Abstract Structural colors obtained by self‐organized microstructures have found a variety of applications, such as decorations, displays, and encryption microarrays, been widely investigated for the excellent stability anisotropic optical responses upon external stimuli. Here, fabrication bowl‐like shriveled microshells using helical cholesteric liquid crystals (CLCs) glass‐capillary‐based microfluidic techniques is reported. Interestingly, internal selective Bragg interferences radially...
Deep eutectic solvents (DESs) are recognized as sustainable mediums, and DES-related materials have been used for the detection of perfluoroalkyl substances (PFASs). However, such studies were usually limited to only one category PFASs among massive target compounds. Additionally, selectivity related method still needs improvement. In this study, a convenient effective direct selective microextraction multiple was developed based on target-specific DES-based superparamagnetic nanofluid....
This paper focuses on the impact of China’s sectorial reform income inequality within country and between USA. We found that when we look at full period (1991-2020), as employment in primary sector decreases, is undeterminable. However, examine time periods 1991-2007 2008-2020, had intensified first decreased second period. The gap China USA has been constantly decreasing, whether looking GNI or per capita. Through this research, hypothesize agrarian policies may play a crucial role for...
Layered gallium sulfide (GaS), a material that has attracted much attention in the field of micro-nano optoelectronics recently, is predicted to have four stable stacking orders (β-, γ-, ε-, and δ-GaS) with close formation energies; β-GaS most considered, other phases are seldom discussed. However, considering ease phase transition few-layer materials, lack accurate crystal identification prevents full understanding this for specific applications requiring phases. Here, we report novel situ...
Abstract The robust excitonic effects in layered violet phosphorus (VP) render it an ideal platform for exploring photoluminescence (PL) at 2D nanoscale. However, limited research on its luminescent properties constrains understanding and hinders potential future developments. Here, a detailed investigation into the thickness‐dependent PL evolution multilayer VP samples is conducted, where their thicknesses are precisely controlled through oxygen plasma dry etching technique. pronounced...
The control of optical properties by electric means is the key to optoelectronic applications. For atomically thin two-dimensional (2D) materials, natural advantage lies in that carrier doping could be readily controlled through gating effect, possibly affecting properties. Exploiting this advantage, here we report gate switching ultrafast upconverted photoluminescence from monolayer graphene. luminescence can completely switched off Pauli-blocking one-photon interband transition graphene...