A5101529833- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- 2D Materials and Applications
- Perovskite Materials and Applications
- MXene and MAX Phase Materials
- Advanced Photocatalysis Techniques
- Topological Materials and Phenomena
- Graphene research and applications
- ZnO doping and properties
- Catalytic Processes in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Chalcogenide Semiconductor Thin Films
- Metamaterials and Metasurfaces Applications
- Crystallography and molecular interactions
- Plasmonic and Surface Plasmon Research
- Layered Double Hydroxides Synthesis and Applications
- TiO2 Photocatalysis and Solar Cells
- Iron-based superconductors research
- Nanowire Synthesis and Applications
- Ga2O3 and related materials
- Advanced Condensed Matter Physics
- Rare-earth and actinide compounds
- Catalysis and Oxidation Reactions
- Thermal Radiation and Cooling Technologies
- Nuclear materials and radiation effects
Huaibei Normal University
2018-2024
ShanghaiTech University
2021-2024
Songshan Lake Materials Laboratory
2021-2024
Changchun Institute of Optics, Fine Mechanics and Physics
2023-2024
Chinese Academy of Sciences
2015-2024
Hefei University of Technology
2016-2023
Wuhan University of Technology
2023
Institute of Microelectronics
2022
Anhui Jianzhu University
2021
Tianjin University
2018-2020
Recently, research on graphene based photodetectors has drawn substantial attention due to ultrafast and broadband photoresponse of graphene. However, they usually have low responsivity photoconductive gain induced by the gapless nature graphene, which greatly limit their applications. The synergetic integration with other two-dimensional (2D) materials form van der Waals heterostructure is a very promising approach overcome these shortcomings. Here we report growth graphene-Bi2Te3 where...
Apart from conventional materials, the study of two-dimensional (2D) materials has emerged as a significant field for variety applications. Graphene-like 2D are important elements potential optoelectronics applications due to their exceptional electronic and optical properties. The processing these towards realization devices been one main motivations recent development photonics optoelectronics. progress in photonic based on graphene-like especially topological insulators (TIs) transition...
2D transition metal dichalcogenides (TMDCs) have attracted considerable attention due to their impressively high performance in optoelectronic devices. However, efficient infrared (IR) photodetection has been significantly hampered because the absorption wavelength range of most TMDCs lies visible spectrum. In this regard, semiconducting MoTe2 can be an alternative choice owing its smaller band gap ≈1 eV from bulk monolayer and carrier mobility. Here, a /graphene heterostructure...
Abstract Molybdenum disulphide (MoS 2 ), which is a typical semiconductor from the family of layered transition metal dichalcogenides (TMDs), an attractive material for optoelectronic and photodetection applications because its tunable bandgap high quantum luminescence efficiency. Although photoresponsivity 880–2000 AW −1 photogain up to 5000 have been demonstrated in MoS -based photodetectors, light absorption gain mechanisms are two fundamental issues preventing these materials further...
Abstract 2D materials show wide‐ranging physical properties with their electronic bandgaps varying from zero to several electronvolts, offering a rich platform explore novel and optoelectronic functions. Notably, atomically thin are well suited for integration in circuits, because of ultrathin body, strong light–matter interactions, compatibility the current silicon photonic technology. In this paper, an overview state art using devices is provided. The typical applications including light...
We report a MAPbI3-based self-powered photodetector (SPPD). It has dual sensing mechanism that relies on the joint properties of photoelectric effect and triboelectric perovskite material. Both photoconductivity surface density composite thin film are significantly altered upon solar illumination, which results in considerable reduction output voltage. The SPPD exhibits excellent responsivity (7.5 V W(-1)), rapid response time (<80 ms), great repeatability, broad detection range extends from...
Se-doped black phosphorus (BP) crystal, in centimeter scale, is synthesized by a scalable gas-phase growth method under mild conditions. The BP exhibits high quality with excellent electrical properties. Se dope induces over 20-fold enhancement of responsivity (R) for BP-based 2D photodetectors, resulting R and external quantum efficiency 15.33 A W-1 2993%, respectively.
The fabrication of van der Waals heterostructures mainly extends to two-dimensional (2D) materials that are exfoliated from their bulk counterparts, which is greatly limited by high-volume manufacturing. Here, we demonstrate multilayered PtS2/PtSe2 heterojunctions covering a large area on the SiO2/Si substrate with maximum size 2″ in diameter, offering throughputs can meet practical application demand. Theoretical simulation was carried out understand electronic properties heterojunctions....
Black phosphorus (BP) has been considered as a promising two‐dimensional (2D) semiconductor beyond graphene owning to its tunable direct bandgap and high carrier mobility. However, the hole‐transport‐dominated characteristic limits application of BP in versatile electronics. Here, we report stable complementary metal oxide (COMS) compatible electron doping method for BP, which is realized with strong field‐induced effect from K + center silicon nitride (Si x N y ). An obvious change pristine...
X-ray detectors must be operated at minimal doses to reduce radiation health risks during security examination or medical inspection, therefore requiring high sensitivity and low detection limits. Although organolead trihalide perovskites have rapidly emerged as promising candidates for due their cost remarkable performance, these materials threaten the safety of human body environment presence lead. Here we present realization highly sensitive based on an environmentally friendly...
Abstract How to improve the capacity of light‐harvesting is still an important point and essential strategy for assembling high‐efficiency quantum dot–sensitized solar cells (QDSCs). A believable approach implant new light absorption materials into QDSCs stimulate charge transfer. Herein, few‐layer black phosphorus dots (BPQDs) are synthesized by electrochemical intercalation technology using bulk BP as source. Then obtained BPQDs deposited onto surface Zn–Cu–In–S–Se (ZCISSe) QD‐sensitized...
Perovskite-based photodetectors exhibit potential applications in communication, neuromorphic chips, and biomedical imaging due to their outstanding photoelectric properties facile manufacturability. However, few of perovskite-based focus on ultraviolet-visible-short-wavelength infrared (UV-Vis-SWIR) broadband photodetection because the relatively large bandgap. Moreover, such with individual nanocrystal channel featuring monolithic integration functional electronic/optical components have...
Platinum selenide (PtSe2) is a new 2D transition metal dichalcogenide with tunable bandgap, high carrier mobility, and air stability, which has hopeful applications in high-performance photodetectors microelectronic devices. However, low response large dark current caused by the semimetal properties of PtSe2 limit its applications. In this work, PtSe2/MoSe2 heterojunction photodetector constructed for broadband self-powered photodetection. The device exhibits rectification ratio exceeding...
Abstract Light‐induced ferroelectric polarization in 2D layered materials holds promise photodetectors with multilevel current and reconfigurable capabilities. However, translating this potential into practical applications for high‐density optoelectronic information storage remains challenging. In work, an α‐In 2 Se 3 /Te heterojunction design that demonstrates spatially resolved, multilevel, nonvolatile photoresponsivity is presented. Using photocurrent mapping, the localized light‐induced...
Metal-phosphorus-trichalcogenides (MPTs), represented by NiPS3, FePS3, etc, are newly developed 2D wide-bandgap semiconductors and have been proposed as excellent candidates for ultraviolet (UV) optoelectronics. In spite of having superior advantages solar-blind UV photodetectors, including those free surface trap states, being highly compatible with versatile integrations well an appropriate band gap, to date relevant study is rare. this work, the photoresponse characteristic detectors...
Abstract We report the ultra-broadband nonlinear optical (NLO) response of Bi 2 Te x Se 3−x nanosheets produced by a facile solvothermal method. Our result show that extracted basic nonlinearity parameters nanosheets, α NL , Imχ (3) and FOM reach ~10 4 cm/GW, −8 esu −13 cm, respectively, which are several orders magnitude larger than those bulk dielectrics. further observed excitation intensity dependence NLO absorption coefficient sensitivity. The mechanisms phenomena were proposed based on...
Heterojunction photodetectors based on 2D materials are a promising geometry to acquire broadband photodetection with combination of wide-bandgap and narrow bandgap functional materials. But the interface condition heterojunction is difficult control due inevitable introduction air bubbles wrinkles. In this paper, synthesis method merging exfoliation CVD reported fabricate GaSe/PtSe2 heterojunction. The devices present highest responsivity detectivity about 1.7 A/W 3.51 × 1012 Jones at −10 V...
The emerging two-dimensional (2D) van der Waals (vdW) materials and their heterostructures hold great promise for optoelectronics photonic applications beyond strictly lattice-matching constraints grade interfaces. However, previous photodetectors optoelectronic devices rely on relatively simple vdW with one or two blocks. realization of high-order has been exponentially challenging due to conventional layer-by-layer arduous restacking sequential synthesis. In this study, we present an...
Large‐scale production of 2D van der Waals heterostructures with precisely controlled chemical composition is the major challenge hindering their practical electric and optoelectronic applications. In this work, a solvothermal method demonstrated to produce consisting metal chalcogenides graphene in large scale. situ powder X‐ray diffraction reveals that plays an important role as atomic template grow bismuth chalcogenide nanoplatelets preferential stoichiometry Bi 2 Se 1.5 Te , which...
Two-dimensional (2D) noble-metal dichalcogenides have emerged as a new platform for the realization of versatile flat optics with considerable degree miniaturization. However, light field manipulation at atomic scale is widely considered unattainable since vanishing thickness and intrinsic losses 2D materials completely suppress both resonances phase accumulation effects. Empowered by conventionally perceived adverse effects losses, we show that structured PtSe2 films integrated uniform...