A5058834095- Perovskite Materials and Applications
- Luminescence Properties of Advanced Materials
- Solid-state spectroscopy and crystallography
- Luminescence and Fluorescent Materials
- Quantum Dots Synthesis And Properties
- Aluminum Alloys Composites Properties
- Aluminum Alloy Microstructure Properties
- 2D Materials and Applications
- Metallurgy and Material Forming
- Radiation Detection and Scintillator Technologies
- Lanthanide and Transition Metal Complexes
- Organic Light-Emitting Diodes Research
- Optical properties and cooling technologies in crystalline materials
- Food composition and properties
- Anodic Oxide Films and Nanostructures
- Atomic and Subatomic Physics Research
- Inorganic Fluorides and Related Compounds
- Magnesium Alloys: Properties and Applications
- Glass properties and applications
- Recycling and utilization of industrial and municipal waste in materials production
- Bauxite Residue and Utilization
- Food Chemistry and Fat Analysis
- Spectroscopy and Chemometric Analyses
- Photochemistry and Electron Transfer Studies
- Gold and Silver Nanoparticles Synthesis and Applications
University of Jinan
2018-2025
China Power Engineering Consulting Group (China)
2024
Shandong Electric Power Engineering Consulting Institute Corp
2024
Henan Polytechnic University
2022-2024
Ministry of Education of the People's Republic of China
2019-2024
King Abdullah University of Science and Technology
2017-2023
Communication University of Zhejiang
2023
China People's Police University
2010-2023
Jinhua Academy of Agricultural Sciences
2023
Tobacco Research Institute
2012-2022
Scintillators, which are capable of converting ionizing radiation into visible photons, an integral part medical, security, and commercial diagnostic technologies such as X-ray imaging, nuclear cameras, computed tomography. Conventional scintillator fabrication typically involves high-temperature sintering, generating agglomerated powders or large bulk crystals, pose major challenges for device integration processability. On the other hand, colloidal quantum dot scintillators cannot be cast...
We report the synthesis of luminescent crystals based on hexagonal-phase NaYF4 upconversion microrods. The synthetic procedure involves an epitaxial end-on growth nanocrystals comprising different lanthanide activators onto This bottom-up method readily affords multicolor-banded in gram quantity by varying composition activators. Importantly, using one-dimensional microrods as template enables facile multicolor tuning a single crystal, which is inaccessible conventional nanoparticles....
Perovskite nanocrystals (NCs) have become leading candidates for solution-processed optoelectronics applications. While substantial work has been published on 3-D perovskite phases, the NC form of zero-dimensional (0-D) phase this promising class materials remains elusive. Here we report synthesis a new colloidal semiconductor NCs based Cs4PbBr6, 0-D perovskite, enabled through design novel low-temperature reverse microemulsion method with 85% reaction yield. These exhibit high...
Abstract The ultimate frontier in nanomaterials engineering is to realize their composition control with atomic scale precision enable fabrication of nanoparticles desirable size, shape and surface properties. Such becomes even more useful when growing hybrid nanocrystals designed integrate multiple functionalities. Here we report achieving such degree a family rare-earth-doped nanomaterials. We experimentally verify the co-existence different roles oleate anions (OA − ) molecules (OAH)...
Zero-dimensional perovskite-related structures (0D-PRS) are a new frontier of perovskite-based materials. 0D-PRS, commonly synthesized in powder form, manifest distinctive optical properties such as strong photoluminescence (PL), narrow emission line width, and high exciton binding energy. These make 0D-PRS compelling for several types optoelectronic applications, including phosphor screens electroluminescent devices. However, it would not be possible to rationally design the chemistry...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTRoom-Temperature Engineering of All-Inorganic Perovskite Nanocrsytals with Different DimensionalitiesHaoze Yang†#, Yuhai Zhang†#, Jun Pan†‡, Yin†, Osman M. Bakr*†‡, and Omar F. Mohammed*†View Author Information† KAUST Solar Center, Division Physical Sciences Engineering, King Abdullah University Science Technology, Thuwal 23955-6900, Kingdom Saudi Arabia‡ Catalysis Arabia*O.M.B., email: [email protected]*O.F.M., protected]Cite this: Chem....
With record efficiencies achieved in lead halide perovskite-based photovoltaics, urgency has shifted toward finding alternative materials that are stable and less toxic. Bismuth-based perovskite currently one of the most promising candidates among those alternatives. However, band structures these materials, including nature bandgaps, remain elusive due to extremely low photoluminescence quantum yield (PLQY) scattering issues their thin-film form. Here, we reveal specific material's...
Abstract Luminescent solar concentrators (LSCs) are able to efficiently harvest energy through large‐area photovoltaic windows, where fluorophores delicately embedded. Among various types of fluorophores, all‐inorganic perovskite nanocrystals (NCs) emerging candidates as absorbers/emitters in LSCs due their size/composition/dimensionality tunable optical properties and high photoluminescence quantum yield (PL QY). However, the large overlap between absorption emission spectra, it is still...
Green-emitting zero-dimensional perovskite Cs4PbBr6, consisting of an array isolated [PbBr6]4– octahedra, has drawn a magnitude interest due to its peculiar yet robust photoluminescence properties. Given many advances in the past few years, true nature unusual green emission from wide-bandgap Cs4PbBr6 remains elusive. Although number reviews have been published on this subject, emerging evidence motivates us summarize rapid progress about debate, whereby critical comments were made either...
Flexible copper halide films of 400 cm2 area were fabricated with outstanding mechanical stability, excellent film uniformity, nearly 100% photoluminescence quantum yields, and resistance to water heat. The re-absorption-free X-ray imaging scintillators engineered based on these exhibit superior scintillation performance a detection limit as low 48.6 nGy/s 17 lp/mm resolution, representing the highest resolution for powder-based screens.
Scintillators are critical for high-energy radiation detection across a wide array of potential applications, from medical radiography and safety inspections all the way to space exploration. However, constrained by their current shortcomings, including high-temperature complex fabrication as well inherent brittleness fragility among thick films bulk crystals, traditional scintillators finding it difficult meet rising demand cost-effective, ecofriendly, flexible X-ray detection. Here, we...
Copper-based (I) halide perovskites have emerged as a promising candidate for scintillation screens in X-ray inspection and imaging areas due to their solution processability high light yield. Here, centimeter-sized Cs3Cu2Cl5 single crystal was grown by slow-cooling method. The planar orientation controlled space-confined chamber, generating which is readily used screen without any further shaping. exhibited unity photoluminescence quantum yield superior performance. up 95,000 photons/MeV,...
Abstract Low-dimensional lead-free metal halide perovskites are highly attractive for cutting-edge optoelectronic applications. Herein, we report a class of scandium-based double perovskite crystals comprising antimony dopants that can generate multiexcitonic emissions in the ultraviolet, blue, and yellow spectral regions. Owing to zero-dimensional nature crystal lattice minimizes energy crosstalk, different excitonic states be selectively excited by ultraviolet light, X-ray irradiation,...
We investigate the intrinsic lead ion (Pb2+) emissions in zero-dimensional (0D) perovskite nanocrystals (NCs) using a combination of experimental and theoretical approaches. The temperature-dependent photoluminescence experiments for both "nonemissive" (highly suppressed green emission) emissive (bright Cs4PbBr6 NCs show splitting emission spectra into high- low-energy transitions ultraviolet (UV) spectral range. In nonemissive case, we attribute high-energy UV at approximately 350 nm to...
3D optical manipulation of a thermal-sensing upconverting particle allows for the determination extension thermal gradient created in surroundings plasmonic-mediated photothermal-treated HeLa cancer cell. As service to our authors and readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, but not copy-edited or typeset. Technical support issues arising from (other than missing files) should addressed...
Engineering the surface energy through careful manipulation of chemistry is a convenient approach to control quantum confinement and structure dimensionality during nanocrystal growth. Here, we demonstrate that introduction pyridine synthesis methylammonium lead bromide (MAPbBr3) perovskite nanocrystals can transform three-dimensional (3D) cubes into two-dimensional (2D) nanostructures. Density functional theory (DFT) calculations show preferentially binds Pb atoms terminating surface,...
The weak X-ray capture capability of organic scintillators always leads to poor imaging resolution and detection sensitivity. Here, we realize an efficient reabsorption-free scintillator at the interface perovskite nanosheets using a very energy transfer strategy. Our steady-state ultrafast time-resolved experiments supported by density functional theory calculations demonstrate that interfacial from nanosheet chromophore with thermally activated delayed fluorescence (TADF) character can be...
We report the growth of a halide-based double perovskite, Cs2 Nax Ag1-x InCl6 :y%Mn, via facile hydrothermal reaction at 180 °C. Through co-doping strategy both Na+ and Mn2+ , as-prepared crystals exhibited red afterglow featuring high color purity (ca. 100 %) long duration time (>5400 s), three orders magnitude longer than those solution-processed organic crystals. The energy transfer (ET) process between self-trapped excitons (STE) activators was investigated through time-resolved...
Wet chemistry methods, including hot-injection and precipitation have emerged as major synthetic routes for high-quality perovskite nanocrystals in backlit display scintillation applications. However, low chemical yield hinders their upscale production practical use. Meanwhile, the labile nature of halide-based poses a challenge long-term storage nanocrystals. Herein, we report green synthesis at room temperature gram-scale CsPbBr3 nanosheets with minimum use solvent, saving over 95% solvent...
In this work, we describe a highly efficient and reabsorption-free X-ray-harvesting system using luminescent metal-organic framework (MOF)-fluorescence chromophore composite films. The ultrafast time-resolved experiments density functional theory calculations demonstrate that nearly 100% energy transfer from MOF with high atomic number to an organic thermally activated delayed fluorescence (TADF) character can be achieved. Such unprecedented efficiency of interfacial the direct harnessing...
All-inorganic lead halide perovskites are promising materials for many optoelectronic applications. However, two issues that arise during device fabrication hinder their practical use, namely, inadequate continuity of coated inorganic perovskite films across large areas and inability to integrate these with traditional photolithography due poor adhesion wafers. Herein, the first time, address issues, we show a room-temperature synthesis process employed produce CsPbBr3 nanocrystals...
Abstract Near‐infrared (NIR) afterglow is keenly sought in emerging areas including deep‐tissue imaging and night‐vision surveillance, while only few successes powder phosphors are achieved through solid‐state calcination. In this work, a perovskite single crystal, namely Cs 2 Na 0.2 Ag 0.8 InCl 6 :Yb 3+ , grown solution via simple hydrothermal reaction. Through co‐doping strategy involving both + Yb dual‐band emission the visible NIR region activated by self‐trapped excitons (STE)...