A5053165934- Photonic and Optical Devices
- Optical Network Technologies
- Neural Networks and Reservoir Computing
- Orbital Angular Momentum in Optics
- Plasmonic and Surface Plasmon Research
- Semiconductor Quantum Structures and Devices
- Graphene research and applications
- Semiconductor Lasers and Optical Devices
- Optical Polarization and Ellipsometry
- Nanowire Synthesis and Applications
- Advanced Fiber Laser Technologies
- 2D Materials and Applications
- Metamaterials and Metasurfaces Applications
- Quantum Dots Synthesis And Properties
- Advanced Photonic Communication Systems
- GaN-based semiconductor devices and materials
- Near-Field Optical Microscopy
- Photonic Crystals and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Ga2O3 and related materials
- Semiconductor materials and interfaces
- Solid State Laser Technologies
- Chalcogenide Semiconductor Thin Films
- ZnO doping and properties
- Quantum Mechanics and Non-Hermitian Physics
Hainan University
2022-2025
Wuhan National Laboratory for Optoelectronics
2016-2025
Huazhong University of Science and Technology
2016-2025
Inner Mongolia Agricultural University
2023-2024
Sichuan University of Science and Engineering
2022-2024
Central South University
2022-2023
Hong Kong Polytechnic University
2019-2022
Optics Technology (United States)
2022
Shenzhen Polytechnic
2021-2022
Weatherford College
2022
The p-n diodes represent the most fundamental device building block for diverse optoelectronic functions, but are difficult to achieve in atomically thin transition metal dichalcogenides (TMDs) due inability selectively dope them into p- or n-type semiconductors. Here we report first demonstration of an and sharp heterojunction diode by vertically stacking p-type monolayer tungsten diselenide (WSe2) few-layer molybdenum disulfide (MoS2). Electrical measurement demonstrates excellent...
The search for clean renewable energy sources is of central importance to address the ever-increasing challenges diminishing fossil fuels and global warming. Photocatalytic processes can mimic natural photosynthesis directly convert solar into chemical energy, represent an attractive strategy generation environmental remediation. Nanostructured semiconductors play important role in photocatalysis due their unique structures, physical properties. Here we present a brief overview recent...
Transition metal dichacogenides represent a unique class of two-dimensional layered materials that can be exfoliated into single or few atomic layers. Tungsten diselenide (WSe2) is one typical example with p-type semiconductor characteristics. Bulk WSe2 has an indirect band gap (∼1.2 eV), which transits direct (∼1.65 eV) in monolayers. Monolayer WSe2, therefore, considerable interest as new electronic material for functional electronics and optoelectronics. However, the controllable...
Graphene has attracted enormous attention for radio-frequency transistor applications because of its exceptional high carrier mobility, saturation velocity, and large critical current density. Herein we report a new approach the scalable fabrication high-performance graphene transistors with transferred gate stacks. Specifically, arrays stacks are first patterned on sacrificial substrate, then onto arbitrary substrates top. A self-aligned process, enabled by unique structure stacks, is used...
Bernal-stacked (AB-stacked) bilayer graphene is of significant interest for functional electronic and photonic devices due to the feasibility continuously tune its band gap with a vertical electric field. Mechanical exfoliation can be used produce AB-stacked flakes but typically sizes limited few micrometers. Chemical vapor deposition (CVD) has been recently explored synthesis usually coverage mixture AB- randomly stacked structures. Herein we report rational approach large-area high-quality...
We report a facile synthetic strategy to single-crystalline PtPd nanocrystals with controllable shapes and tunable compositions. In the developed synthesis, molar ratio of starting precursors determines composition in final nanocrystals, while halides function as shape-directing agent induce formation cubic or octahedral/tetrahedral morphology. These obtained exhibit high activity hydrogenation nitrobenzene, their performance is highly shape- composition-dependent Pt ∼50% showing optimum...
The ability to measure the orbital angular momentum (OAM) distribution of vortex light is essential for OAM applications. Although there have been many studies on measurement modes, it difficult quantitatively and instantaneously power among different let alone phase them. In this work, we propose an complex spectrum analyzer that enables simultaneous measurements distributions modes by employing rotational Doppler effect. original mode mapped electrical beat signals using a photodetector....
Reinventing the wheel: Bimetallic AuPd nanowheels, a freestanding form of 2D nanostructures, were synthesized in one-pot process. The well-defined and tunable surface plasmon resonance displayed by these nanowheels was exploited unique catalytic process which light energy used to drive reactions, such as Suzuki coupling, with much higher efficiency than that conventional heating
Channeling a good catalyst: Highly porous palladium nanostructures (pPdNs) with perpendicular pore channels (see picture) were prepared under mild conditions. The combination of high surface area and rich edge/corner atoms gives pPdNs better catalytic performance than known Pd catalysts for the hydrogenation nitrobenzene styrene Suzuki coupling reaction.
Abstract The layered transition metal dichalcogenides have attracted considerable interest for their unique electronic and optical properties. While the monolayer MoS 2 exhibits a direct bandgap, multilayer is an indirect bandgap semiconductor generally optically inactive. Here we report electric-field-induced strong electroluminescence in . We show that GaN–Al O 3 –MoS –Al -graphene vertical heterojunctions can be created with excellent rectification behaviour. Electroluminescence studies...
Flexible thin-film transistors (TFTs) are of central importance for diverse electronic and particularly macroelectronic applications. The current TFTs using organic or inorganic thin film semiconductors usually limited by either poor electrical performance insufficient mechanical flexibility. Here, we report a new design highly flexible vertical (VTFTs) with superior robustness. By the graphene as work-function tunable contact amorphous indium gallium zinc oxide (IGZO) film, flow across...
Abstract Two-dimensional layered transition-metal dichalcogenides have attracted considerable interest for their unique layer-number-dependent properties. In particular, vertical integration of these two-dimensional crystals to form van der Waals heterostructures can open up a new dimension the design functional electronic and optoelectronic devices. Here we report photocurrent generation in graphene/MoS 2 /graphene by creating device with two distinct regions containing one-layer...
Photonic signal processing is essential in the optical communication and computing. Numerous photonic processors have been proposed, but most of them exhibit limited reconfigurability automaticity. A feature fully automatic implementation intelligent response highly desirable for multipurpose processors. Here, a self-configuring reconfigurable silicon processor proposed experimentally demonstrated. The capable performing various functions, including multichannel switching,...
Here we present a general strategy for the fabrication of high-performance organic vertical thin film transistors (OVTFTs) based on heterostructure graphene and different semiconductor films. Utilizing unique tunable work function graphene, show that carrier transport across graphene-organic junction can be effectively modulated to achieve an ON/OFF ratio greater than 10(3). Importantly, with OVTFT design, channel length is determined by thickness rather lithographic resolution. It thus...
Abstract Graphene-based photodetectors have attracted significant attention for high-speed optical communication due to their large bandwidth, compact footprint, and compatibility with silicon-based photonics platform. Large-bandwidth coherent receivers are crucial elements large-capacity networks advanced modulation formats. Here, we propose experimentally demonstrate an integrated receiver based on a 90-degree hybrid graphene-on-plasmonic slot waveguide photodetectors, featuring footprint...
Abstract The explosive growth of data and information has motivated various emerging non-von Neumann computational approaches in the More-than-Moore era. Photonics neuromorphic computing attracted lots attention due to fascinating advantages such as high speed, wide bandwidth, massive parallelism. Here, we offer a review on optical neural our research groups at device system levels. photonics neuron synapse plasticity are presented. In addition, introduce several architectures algorithms...