A5043593345- 2D Materials and Applications
- Perovskite Materials and Applications
- MXene and MAX Phase Materials
- Plasmonic and Surface Plasmon Research
- Graphene research and applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Semiconductor Quantum Structures and Devices
- Conducting polymers and applications
- Chemistry and Chemical Engineering
- Simulation and Modeling Applications
- Photorefractive and Nonlinear Optics
- Semiconductor Lasers and Optical Devices
- Air Quality Monitoring and Forecasting
- Computational Drug Discovery Methods
- Autonomous Vehicle Technology and Safety
- Advanced Optical Sensing Technologies
- Various Chemistry Research Topics
- Nanowire Synthesis and Applications
Sichuan University
2024-2025
Hunan University
2019-2024
Chengdu University of Technology
2022
State Key Laboratory of Chemobiosensing and Chemometrics
2021
Karlsruhe Institute of Technology
2020
Abstract The rational control of the nucleation and growth kinetics to enable 2D vertical heterostructure remains a great challenge. Here, an in‐depth study is provided toward understanding mechanism transition metal dichalcogenides (TMDCs) heterostructures in terms kinetics, where active clusters with high diffusion barrier will induce on top TMDC templates realize heterostructures. Based this mechanism, experiment, through metal/chalcogenide ratio vapor precursors, effective manipulation...
With unique valley-dependent optical and optoelectronic properties, 2D transition metal dichalcogenides (2D TMDCs) are promising materials for valleytronics. Second-harmonic generation (SHG) in TMDCs monolayers has shown selection rules. However, SHG monolayer is generally weak; it important to obtain with both strong signals a large degree of polarization. In the work, variety inversion-symmetry-breaking (3R-like phase) (WSe2 , WS2 MoS2 ) atomic layers, spiral structures, heterostructures...
Transition metal dichalcogenide monolayers exhibit ultrahigh surface sensitivity since they expose all atoms to the and thereby influence their optoelectronic properties. Here, we report an intriguing lightening of photoluminescence (PL) from edge interior over time in WS2 grown by physical vapor deposition method, with whole monolayer brightened eventually. Comprehensive optical studies reveal that PL enhancement arises p doping induced oxygen adsorption. First-principles calculations...
Abstract As p ‐type phase‐change degenerate semiconductors, crystalline and amorphous germanium telluride (GeTe) exhibit metallic semiconducting properties, respectively. However, the massive structural defects strong interface scattering in GeTe films significantly reduce their performance. In this work, two‐dimensional (2D) nanosheets are synthesized via a specially designed space‐confined chemical vapor deposition (CVD) method, with thickness of reduced to 1.9 nm. The CVD method improves...
Transition metal dichalcogenides (TMDs) have emerged as two-dimensional (2D) building blocks to construct nanoscale light sources. To date, a wide array of TMD-based light-emitting devices (LEDs) been successfully demonstrated. Yet, their atomically thin and planar nature entails an additional waveguide/microcavity for effective optical routing/confinement. In this sense, integration TMDs with electronically active photonic nanostructures form functional heterojunction is crucial importance...
Abstract Tin (Sn)‐based perovskites have emerged as promising alternatives to lead (Pb)‐based in thin‐film photovoltaics due their comparable properties and reduced toxicity. Strains can be tailored modulate optoelectronic properties, but mechanisms for the effects of strains on Sn‐based perovskite films devices are unrevealed corresponding strain engineering is unexplored. Herein, a strategy developed through incorporating 4‐fluorobenzylammonium halide salts (FBZAX, X = I, Br, Cl) into...
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is a widely used hole transport material in inverted tin-based perovskite solar cells (Sn–PSCs). However, the efficiency and stability of these Sn–PSCs that utilize PEDOT:PSS are unsatisfactory, partly due to concerns about their mismatched work functions, hydrophobicity, chemical interactions. Here, we introduce self-assembled monolayer (SAM), (2-(7H-dibenzo[c,g]carbazol-7-yl)ethyl) phosphonic acid (2PADCB) as...
Nanoscale laser sources with downscaled device footprint, high energy efficiency, and operation speed are pivotal for a wide array of optoelectronic nanophotonic applications ranging from on-chip interconnects, nanospectroscopy, sensing to optical communication. The capability on-demand lasing output reversible continuous wavelength tunability over broad spectral range enables key functionalities in wavelength-division multiplexing finely controlled light–matter interaction, which remains an...
Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted extensive attention due to their unique electronic and optical properties. In particular, TMDs can be flexibly combined form diverse vertical van der Waals (vdWs) heterostructures without the limitation of lattice matching, which creates vast opportunities for fundamental investigation novel optoelectronic applications. Here, we report an atomically thin p-n junction WSe2/MoS2 produced by a chemical vapor deposition...
Micro/nano photonic barcoding has emerged as a promising technology for information security and anti-counterfeiting applications owing to its high robust tamper resistance. However, the practical application of conventional micro/nano barcodes is constrained by limitations in encoding capacity identification verification (e.g., broad emission bandwidth expense pulsed lasers). Herein, we propose high-capacity barcode labels leveraging continuous-wave (CW) pumped monolayer tungsten disulfide...
High-index semiconductor nanoantennae represent a powerful platform for nonlinear photon generation. Devices with reduced footprints are pivotal higher integration capacity and energy efficiency in photonic integrated circuitry (PIC). Here, we report on deep subwavelength antenna based dilute nitride GaNP nanowires (NWs), whose second harmonic generation (SHG) shows 5-fold increase by incorporating ∼0.45% of nitrogen (N), comparison GaP counterpart. Further integrating gold (Au) thin...
Substitutional doping has proved to be one of the most important approaches tune and improve opto-electronic performance traditional semiconductors. Similarly, controllable substitution cations in two-dimensional layered materials can effectively modify manipulate band structures, which help explore sciences broaden related applications. In this paper, salt-assisted one-step chemical vapor deposition method was used achieve Re MoS2 monolayers. High-resolution scanning transmission electron...
Two-dimensional (2D) transition metal dichalcogenides (TMDCs) have attracted enormous research interest owing to their unique photo-physics and excellent optoelectronic properties. However, the ubiquitous defects in 2D TMDCs greatly affect properties of them. For example, prototype molybdenum disulfide (MoS2) exhibits very poor photoluminescence (PL) due high defect density. Here, we report a repair strategy based on facile one-step chemical vapor deposition method that achieves two orders...
Germanium chalcogenide nanosheets with controllable phase transition are synthesized by a hydrogen-mediated CVD strategy. The systematic investigation can facilitate researchers to screen reasonable materials achieve different functions.
Abstract Photonic elements have greater information‐carrying capabilities compared to electronic components, making the development of high‐speed, chip‐integrated optical communication devices crucial for addressing interconnect bottlenecks in high‐speed computing systems. Significant progress has been made studying light sources and their transmission. Despite these advancements, achieving a satisfactory integration photonic circuits with both source waveguide functions remained challenge....
Optoelectronic integrated circuits, with a broad photonic transportation bandwidth, have emerged as promising solution to fulfill the escalating demands for high-volume information and processing. However, challenges persist in developing optoelectronic circuits based on low-dimensional nanostructures, including limited integration density high energy consumption. Here, we demonstrate bidirectional device by integrating light-emitting/harvesting CsPbBr3 nanoplate...
Autonomous systems, as found in autonomous driving and highly automated production require an increased reliability order to achieve their high economic potential. Self-aware sensors are a key component reliable systems. In this paper we highlight proof of concept (PoC) deep learning method that enables LiDAR (Light detection ranging) sensor detect functional impairment. More specifically, convolutional neural network (CNN) is developed trained with labelled data the form point clouds...