A5100438764- 2D Materials and Applications
- Perovskite Materials and Applications
- MXene and MAX Phase Materials
- Graphene research and applications
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- Gas Sensing Nanomaterials and Sensors
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- Advanced Condensed Matter Physics
- Copper-based nanomaterials and applications
- Topological Materials and Phenomena
- Multiferroics and related materials
- Advanced Photocatalysis Techniques
- Advanced Thermoelectric Materials and Devices
- Electromagnetic wave absorption materials
- Catalytic Processes in Materials Science
- Nanowire Synthesis and Applications
- Advanced Machining and Optimization Techniques
- Advanced machining processes and optimization
- Nonlinear Optical Materials Research
- Synthesis and Properties of Aromatic Compounds
- TiO2 Photocatalysis and Solar Cells
- Advanced Semiconductor Detectors and Materials
- Advanced Surface Polishing Techniques
Hefei Institutes of Physical Science
2021-2023
Anhui University
2006-2023
Institute of Solid State Physics
2010-2022
Chinese Academy of Sciences
2009-2022
University of Science and Technology of China
2022
Institute of Intelligent Machines
2019
State Council of the People's Republic of China
2019
Lateral homojunctions made of two-dimensional (2D) layered materials are promising for optoelectronic and electronic applications. Here, we report the lateral WSe2-WSe2 homojunction photodiodes formed spontaneously by thickness modulation in which there unique band structures a unilateral depletion region. The electrically tunable junctions can be switched from n-n to p-p diodes, corresponding rectification ratio increases about 1 1.2 × 104. In addition, an obvious photovoltaic behavior is...
Abstract PdSe 2 , a star photosensitive functional material, has been successfully used in photodetectors based on sensing mechanisms of photogating, photoconductive, and photovoltaic effects. Here, photothermoelectric (PTE) effect is observed flakes grown by chemical vapor deposition. The unique photoresponse arises from an electron temperature gradient instead electron–hole separation. Direct evidence the PTE confirmed nonlocal under zero bias. Moreover, photodetector shows high...
van der Waals (vdW) heterodiodes composed of two-dimensional (2D) layered materials led to a new prospect in photoelectron diodes and photovoltaic devices. Existing studies have shown that Type-I heterostructures great potential be used as photodetectors; however, the tunneling phenomena not been fully revealed. Herein, highly efficient nn+ WS2/PtS2 vdW heterostructure photodiode is constructed. The device shows an ultrahigh reverse rectification ratio 105 owing transmission barrier-induced...
A Nb 2 Pd 3 Se 8 photodetector based on the photothermoelectric effect exhibits a broadband detection capability (365 nm–10.6 μm) without external bias and polarization-sensitive with an anisotropic ratio of 1.42.
Two-dimensional (2D) noble transition-metal dichalcogenides (NTMDs) have drawn widespread attention due to the promising applications in electronics and optoelectronics. Here, we studied measured thermal transport properties of few-layer PtSe2 PtS2 using an optothermal Raman technique. First, obtained temperature- laser-correlative spectra with disparate thicknesses. It is found that temperature laser power increase, A1g Eg modes all specimens show red shifts. The conductivity values can be...
Polarized photodetectors have been widely used in military and civilian applications. The investigation of promising two-dimensional materials with low symmetry structures will be great significance for the development polarized integrated nanodevices. In this work, chromium thiophosphate (CrPS4), a ternary layered semiconductor puckered unique linear dichroism (LD) conversion behavior is introduced to act as polarization-sensitive photodetector. Angle-resolved Raman spectra (ARPRS),...
Two-dimensional (2D) elementary tellurium (Te) has attracted intensive attention due to its potential applications in short-wave infrared photodetector devices. Here, we report hydrothermally synthesized 2D Te nanoflakes for photodetectors with high performance. A Te-based exhibits a peak responsivity of 51.85 W-1 at 1550 nm wavelength, attributed the efficient absorption phonons nanoflakes. Besides, rising and decay time is calculated be ∼19 μs ∼21 μs, respectively, rapid diffusion charge...
Abstract Silicon‐based semiconductor materials dominate modern technology for more than half a century with extraordinary electrical‐optical performance and mutual processing compatibility. Now, 2D have rapidly established themselves as prospective candidates the next‐generation industry because of their novel properties. Considering chemical compatibility, silicon‐based possess significant advantages in integrating silicon. Here, systematic study is reported on structural, electrical,...
Abstract Poly(1‐alkyne)s containing azobenzene pendant groups with different lengths of the spacer and terminal alkyloxy group {[HCC(CH 2 ) m OCOC 6 H 4 NNC OC p +1 ] n , where = 1, 2, 3, or 9 4, 7, 12} were synthesized in satisfactory yields [Rh(nbd)Cl] –Et 3 N catalyst. All polymers soluble common organic solvents such as CHCl tetrahydrofuran. Their structures properties characterized evaluated IR, NMR, thermogravimetric analysis, UV, optical‐limiting nonlinear optical analyses....
ZnFe 2 O 4 films have been prepared using a sol–gel route. The influences of annealing temperature as well atmosphere on the structural, morphological, magnetic, and optical properties were investigated. TEM SEM images show that are polycrystalline in nature homogeneous with densely packed grains. exhibit ferromagnetic behavior at 300 K high transparency (≥80%) above absorption band edge. With decreasing oxygen partial pressure, saturated magnetism is improved gap decreased. reasons...
Low-symmetry two-dimensional (2D) materials have exhibited novel anisotropic properties in optics, electronics, and mechanics. Such characteristics opened up new avenues for fundamental research on nano-electronic devices. In-plane thermal conductivity plays a pivotal role the electronic performance of This article reports systematic study in-plane PdSe2 with pentagonal, low-symmetry structure. An ratio to 1.42 was observed by micro-Raman thermometry method. In Raman scattering spectrum, we...
Abstract The persistent pursuit of broadband photodetectors derives from their unique properties for promising applications such as optoelectronic devices, imaging sensors, and neuromorphic computing. Here, we fabricated high-performance, ultra-wide spectral response (250–1064 nm) easy-processing spin-deposition photodetector based on amorphous germanium sulfide (a-GeS) films by using Ti 3 C 2 T x transparent electrodes contacts. In addition, MXenes contacts have larger photocurrent compared...
Although the post-doping approach as a typical and effective method has been widely employed to improve gas sensing performance of nanostructured metal oxides, it easily breaks their porous nanostructures. Herein facile partial cation-exchange strategy combined with thermal oxidation developed prepare CuO-doped ZnO nanobelts. Using ZnSe·0.5N2H4 nanobelts precursor template, Cu2Se-doped were obtained Zn2+ cations partially exchanged by Cu2+ cations. After annealing in air, they are further...
Abnormal optical anisotropy in 2D PdPS was revealed through polarization-sensitive absorption. The LD polarity shows high sensitivity to light wavelength, which can distinguish five wavelength bands for wavelength-selective photodetection.
Fluffy sodium titanate nanostructures have been fabricated by a simple hydrothermal method with metatitanic acid as precursor. The obtained exhibit the aggregation of nanosheets, and surface area nanostructure is about 110.59 m 2 /g. Such nanoarchitecture indicates high adsorption capacity to some metal ions, such Cd 2+ , maximum has estimated be 255.18 mg/g. possible reasons that are responsible after its ability, ascribed tiny structure, ion‐exchange ability large nanostructures. And this...
In article number 2006496, Liang Li, Guanghai and co-workers synthesize silicon-based semiconductor Si2Te3 crystals using a chemical vapor deposition technique. The combined features of silicon layered structure bridge the 2D materials family together, while intrinsic defects in yield ultrawide photoluminescence spectra broadband spectral response from 405 nm up to 1064 nm.
For characterizing the machining process in high-speed milling (HSM), there is a great significance to study on cutting force signals. Presently, physical and analytical methods focus material mechanical characteristics, which tool runout effect need be taken into account. A novel approach estimating proposed paper. Based non-linear least square method, parameters are estimated from processed displacement signals, filtered frequency domain derived raw acceleration signals with five-spot...