A5089334983- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Graphene research and applications
- Organic Light-Emitting Diodes Research
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Luminescence Properties of Advanced Materials
- Laser-Ablation Synthesis of Nanoparticles
- Ga2O3 and related materials
- Solid-state spectroscopy and crystallography
- Conducting polymers and applications
- Copper-based nanomaterials and applications
- Gas Sensing Nanomaterials and Sensors
- Carbon and Quantum Dots Applications
- Crystallization and Solubility Studies
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Nanowire Synthesis and Applications
- Nonlinear Optical Materials Studies
- Real-Time Systems Scheduling
- Luminescence and Fluorescent Materials
- X-ray Diffraction in Crystallography
Nanjing University of Science and Technology
2016-2025
Ministry of Industry and Information Technology
2017-2025
Virginia Tech
2017-2025
Hunan Normal University
2025
Guangxi University
2025
Nanjing University of Aeronautics and Astronautics
2011-2024
Yangzhou University
2024
Ministry of Natural Resources
2024
United Imaging Healthcare (China)
2023-2024
Materials Science & Engineering
2015-2021
Novel quantum-dot light-emitting diodes based on all-inorganic perovskite CsPbX3 (X = Cl, Br, I) nanocrystals are reported. The well-dispersed, single-crystal quantum dots (QDs) exhibit high yields, and tunable light emission wavelength. demonstration of these novel QDs opens a new avenue toward designing optoelectronic devices, such as displays, photodetectors, solar cells, lasers. As service to our authors readers, this journal provides supporting information supplied by the authors. Such...
Recently, Kovalenko and co‐workers Li developed CsPbX 3 (X = Cl, Br, I) inorganic perovskite quantum dots (IPQDs), which exhibited ultrahigh photoluminescence (PL) yields (QYs), low‐threshold lasing, multicolor electroluminescence. However, the usual synthesis needs high temperature, inert gas protection, localized injection operation, are severely against applications. Moreover, so unexpectedly QYs very confusing. Here, for first time, IPQDs' room‐temperature (RT) synthesis, superior PL,...
Abstract High concentrations of defects are introduced into nanoscale ZnO through non‐equilibrium processes and resultant blue emissions comprehensively analyzed, focusing on defect origins broad controls. Some nanoparticles exhibit very strong emissions, the intensity which first increase then decrease with annealing. These visible interesting excitation dependences: 1) optimal energy for is near bandgap energy, but effective can obviously be lower, even 420 nm (2.95 eV < E g = 3.26 eV);...
The typical two-dimensional (2D) semiconductors MoS2, MoSe2, WS2, WSe2 and black phosphorus have garnered tremendous interest for their unique electronic, optical, chemical properties. However, all 2D reported thus far feature band gaps that are smaller than 2.0 eV, which has greatly restricted applications, especially in optoelectronic devices with photoresponse the blue UV range. Novel mono-elemental semiconductors, namely monolayered arsenene antimonene, wide high stability were now...
All-inorganic colloidal cesium lead halide perovskite quantum dots (CsPbX3, X = Cl, Br, I) are revealed to be a new class of favorable optical-gain materials, which show combined merits both and perovskites. Low-threshold ultrastable stimulated emission is demonstrated under atmospheric conditions with wavelength tunability across the whole visible spectrum via either size or composition control. As service our authors readers, this journal provides supporting information supplied by...
Solution-processed CsPbBr3 quantum-dot light-emitting diodes with a 50-fold external quantum efficiency improvement (up to 6.27%) are achieved through balancing surface passivation and carrier injection via ligand density control (treating hexane/ethyl acetate mixed solvent), which induces the coexistence of high levels ink stability, photoluminescence yields, thin-film uniformity, carrier-injection efficiency.
Metal-halide perovskites have rapidly emerged as one of the most promising materials 21st century, with many exciting properties and great potential for a broad range applications, from photovoltaics to optoelectronics photocatalysis. The ease which metal-halide can be synthesized in form brightly luminescent colloidal nanocrystals, well their tunable intriguing optical electronic properties, has attracted researchers different disciplines science technology. In last few years, there been...
Abstract Unlike the unstable black phosphorous, another two-dimensional group-VA material, antimonene, was recently predicted to exhibit good stability and remarkable physical properties. However, synthesis of high-quality monolayer or few-layer antimonenes, sparsely reported, has greatly hindered development this new field. Here, we report van der Waals epitaxy growth antimonene monocrystalline polygons, their atomical microstructure in ambient condition. The high-quality, polygons can be...
Abstract Nowadays, low‐frequency electromagnetic interference (<2.0 GHz) remains a key core issue that plagues the effective attenuation performance of conventional absorption devices prepared via component‐morphology method (Strategy I). According to theoretical calculations, one fundamental solution is develop material possesses high ε′ but lower ε″. Thus, it attempted control dielectric values applying an external electrical field, which inducts changes in macrostructure toward...
All-inorganic cesium lead halide perovskite (CsPbX3, X = Cl, Br, and I) quantum dots (QDs), possessing high photoluminescence yields tunable color output, have recently been endowed great promise for high-performance solar cells light-emitting diodes (LEDs). Although moisture stability has greatly improved through separating QDs with a SiO2 shell, the practical applications of CsPbX3 are severely restricted by their poor thermal stability, which is associated intrinsically low formation...
Abstract Optoelectronic applications require materials both responsive to objective photons and able transfer carriers, so new two‐dimensional (2D) semiconductors with appropriate band gaps high mobilities are highly desired. A broad range of a 2D semiconductor family, composed monolayer Group 15 elements (phosphorene, arsenene, antimonene, bismuthene) is presented. The calculated binding energies phonon dispersions allotropes exhibit thermodynamic stability. energy semiconducting monolayers...
Inspired by rich physics and functionalities of graphenes, scientists have taken an intensive interest in two-dimensional (2D) crystals h-BN (analogue graphite, so-called "white" graphite). Recent calculations predicted the exciting potentials BN nanoribbons spintronics due to tunable magnetic electrical properties; however no experimental evidence has been provided since fabrication such ribbons remains a challenge. Here, we show that few- single-layered nanoribbons, mostly terminated with...
Luminescent carbon dots (L-CDs) with high quantum yield value (44.7%) and controllable emission wavelengths were prepared via a facile hydrothermal method. Importantly, the surface states of materials could be engineered so that their photoluminescence was either excitation-dependent or distinctly independent. This achieved by changing density amino-groups on L-CD surface. The above successfully used to prepare multicolor L-CDs/polymer composites, which exhibited blue, green even white...
Printed flexible photodetectors based on 2D inorganic perovskites with atomic thickness show excellent photosensing fast rise and decay response times. As-synthesized nanosheets can easily be dispersed in various solvents, leading to large-area, crack-free, low-roughness, films after printing. This study demonstrates that all-inorganic perovskite CsPbX3 as a new class of semiconductors have huge potential for optoelectronic applications.
A strategy of achieving efficient orange emissive carbon nanodots (CNDs) with large sized conjugated sp2-domain is achieved in a solvothermal synthetic route using dimethylformamide as solvent, which the basis bandgap emission; enhanced emission photoluminescent quantum yield 46% realized through surface charges engineering by metal-cation-functionalization. As service to our authors and readers, this journal provides supporting information supplied authors. Such materials are peer reviewed...
A weak acid selective etching strategy was put forward to fabricate oxide-based hollow nanoparticles (HNPs) using core/shell nanostructures of active metal/oxide as sacrificial templates. ZnO-based HNPs, including pure ZnO, Au/ZnO, Pt/ZnO, and Au/Pt/ZnO HNPs with diameter below 50 nm shell thickness 6 has been first achieved at low temperature. The diameter, thickness, even sizes ZnO noble metal ultrafine crystals can be well adjusted by the process. Synchronous formation internal...
Halide perovskite materials have attracted intense research interest due to the striking performance in photoharvesting photovoltaics as well photoemitting applications. Very recently, emerging CsPbX3 (X = Cl, Br, I) nanocrystals been demonstrated be efficient emitters with photoluminescence quantum yield high ∼90%, room temperature single photon sources, and favorable lasing materials. Herein, nonlinear optical properties, particular, multiphoton absorption resultant of CsPbBr3...
Developing low-cost and high-quality quantum dots (QDs) or nanocrystals (NCs) their corresponding efficient light-emitting diodes (LEDs) is crucial for the next-generation ultra-high-definition flexible displays. Here, there a report on room-temperature triple-ligand surface engineering strategy to play synergistic role of short ligands tetraoctylammonium bromide (TOAB), didodecyldimethylammonium (DDAB), octanoic acid (OTAc) toward "ideal" perovskite QDs with high photoluminescence yield...
Inorganic perovskite CsPbBr3 nanocrystals (NCs) are emerging, highly attractive light emitters with high color purity and good thermal stability for light-emitting diodes (LEDs). Their photo/electroluminescence efficiencies very important fabricating efficient LEDs. Here, we propose a novel strategy to enhance the efficiency of NCs through doping heterovalent Ce3+ ions via facile hot-injection method. The cation was chosen as dopant by virtue its similar ion radius formation higher energy...
Previous research on iron oxides/hydroxides has focused the crystalline rather than amorphous phase, despite that latter could have superior electrochemical activity due to disordered structure. In this work, a simple and scalable synthesis route is developed prepare FeOOH quantum dots (QDs) QDs/graphene hybrid nanosheets. The nanosheets possess unique heterostructure, comprising continuous mesoporous nanofilm tightly anchored graphene surface. FeOOH/graphene exhibit pseudocapacitive...