A5019013649- Perovskite Materials and Applications
- 2D Materials and Applications
- Boron and Carbon Nanomaterials Research
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Graphene research and applications
- Chalcogenide Semiconductor Thin Films
- High-pressure geophysics and materials
- MXene and MAX Phase Materials
- Advanced Photocatalysis Techniques
- Solid-state spectroscopy and crystallography
- Geological and Geochemical Analysis
- Advanced Memory and Neural Computing
- Diamond and Carbon-based Materials Research
- Semiconductor materials and interfaces
- Ferroelectric and Negative Capacitance Devices
- Metal and Thin Film Mechanics
- earthquake and tectonic studies
- Crystallography and Radiation Phenomena
- Gas Sensing Nanomaterials and Sensors
- Advancements in Battery Materials
- ZnO doping and properties
- Photocathodes and Microchannel Plates
Argonne National Laboratory
2008-2025
Zhejiang Lab
2022-2025
XinHua Hospital
2025
Xi'an University of Architecture and Technology
2023-2024
Central South University
2012-2024
Kunming University of Science and Technology
2024
Beihua University
2014-2023
Shaanxi Normal University
2020-2023
Ministry of Education of the People's Republic of China
2021-2023
Advanced Energy Materials (United States)
2021-2023
A facile, low cost and high yield method has been developed to prepare single- multi-layer graphene quantum dots (GQDs) from XC-72 carbon black by chemical oxidation. The single-layer GQDs are demonstrated be excellent probes for cellular imaging, while the may offer great potential applications in optoelectronic devices.
Even though the perovskite solar cell has been so popular for its skyrocketing power conversion efficiency, further development is still roadblocked by overall performance, in particular long-term stability, large-area fabrication and stable module efficiency. In essence, soft component ionic-electronic nature of metal halide perovskites usually chaperonage large number anion vacancy defects that act as recombination centers to decrease both photovoltaic efficiency operational stability....
The recent developments of analytical memristive mechanisms and simulation methods/tools for different structures materials have been reviewed.
There is strong interest in improving the environmental stability of hybrid perovskite solar cells while maintaining high efficiency. Here, we solve this problem by using epilayers a wide-band-gap 1D lead iodide perovskitoid structure, based on short organic cation, namely, thiazole ammonium (TA) form (TAPbI3). The capping layer serves to passivate three-dimensional (3D) films, which promotes charge transport, improves carrier lifetime, and prevents ion migration 3D (MA,FA)PbI3 film (MA =...
Multi-flow air knife (MAK): a novel method for large area perovskite film production.
Compressional wave velocity-density (V(P)--ρ) relations of candidate Fe alloys at relevant pressure-temperature conditions the Earth's core are critically needed to evaluate composition, seismic signatures, and geodynamics planet's remotest region. Specifically, comparison between V(P)--ρ profiles provides first-order information on amount type potential light elements--including H, C, O, Si, and/or S-needed compensate density deficit core. To address this issue, here we have surveyed...
The recent dramatic rise in power conversion efficiencies (PCE) of perovskite solar cells has triggered intense research worldwide. However, their practical development is hampered by poor stability and low PCE values with large areas devices. Here, we developed a gas-pumping method to avoid pinholes eliminate local structural defects over film, even for 5 × cm2 modules, the reached 10.6% no significant degradation was found after 140 days outdoor testing. Our approach enables realization...
Two-dimensional (2D) halide perovskites have several distinct structural classes and exhibit great tunability, stability, high potential for photovoltaic applications. Here, we report a new series of hybrid 2D in the Dion–Jacobson (DJ) class based on aromatic m-phenylenediammonium (mPDA) dications. The crystal structures DJ perovskite materials (mPDA)MAn–1PbnI3n+1 (n = 1–3) were solved refined using single-crystal X-ray crystallography. results indicate short I···I interlayer distance...
A uniform and full coverage perovskite film is of significant importance for flexible solar cells.
Control of the perovskite film formation process to produce high-quality organic–inorganic metal halide thin films with uniform morphology, high surface coverage, and minimum pinholes is great importance highly efficient solar cells. Herein, we report on large-area light-absorbing fabrication a new facile scalable gas pump method. By decreasing total pressure in evaporation environment, method can significantly enhance solvent rate by 8 times faster thereby an extremely dense, uniform,...
Oridonin (ORI) is a natural active ingredient with strong anticancer activity. But its clinical use restricted due to poor water solubility, short half-life, and low bioavailability. The aim of this study utilize the metal organic framework material MOF-5 load ORI in order improve release characteristics Herein, was synthesized by solvothermal method direct addition method, characterized Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectrometer...
Solution-processed metal-based halide perovskites have taken a dominant position for perovskite optoelectronics including light emission and X-ray detection; however, the toxicity of included heavy metals severely restricts their applications wearable, lightweight, transient optoelectronic devices. Here, authors describe investigations large (4 × 6 2 mm3 ) 3D metal-free MDABCO-NH4 I3 (MDBACO = methyl-N'-diazabicyclo[2.2.2]octonium) single crystal its charge recombination extraction behavior...
Abstract Ion migration is a key root‐cause of photocurrent instability in perovskite X‐ray detectors. Although 2D single crystal (PSC) good candidate to suppress ion compared with its 3D counterpart, intrinsic stability still needs be improved. In this work, it first envisioned conquer the by enhanced chemical bonding; proposal further confirmed density functional theory calculations, which bonds are made stronger introducing fluorine atom into ortho position phenethylamine (o‐F‐PEA) shorten...
With its power conversion efficiency surpassing those of all other thin-film solar cells only a few years after invention, the perovskite cell has become superstar. Controlling intermediate phase crystallization is key to obtaining high-quality films. Herein, single molecule additive, N,N-dimethylimidodicarbonimidic diamide hydroiodide (DIAI), incorporated into precursor eliminate influence phases. By taking advantage interaction DIAI and dimethyl sulfoxide (DMSO), FAI-PbI2 -DMSO complex...
Abstract Defects in perovskite layers usually cause nonradiative recombination, impairing device performance and stability. Here, fluoroethylamine (FC 2 H 4 NH 3 , FEA) is integrated into the film to passivate defects. By engineering of different amounts fluorine molecule, it found that when 2‐fluoroethylamine (1FEA), which one F bonds first carbon atom at end molecule's structure, used, atoms appear be distributed throughout bulk very surface. When 2,2‐difluoroethylamine (2FEA) 2,...
Abstract The switching variability caused by intrinsic stochasticity of the ionic/atomic motions during conductive filaments (CFs) formation process largely limits applications diffusive memristors (DMs), including artificial neurons, neuromorphic computing and sensory systems. In this study, a DM device with improved uniformity based on well‐crystallized two‐dimensional (2D) h ‐BN, which can restrict CFs from three to two dimensions due high migration barrier Ag + between ‐BN interlayer, is...
Metal-halide perovskitoids with corner-, edge-, and face-sharing octahedra provide a fertile "playground" for structure modulation. With low defect density, ion migration, high intrinsic stability, two-dimensional (2D) perovskitoid single crystals are expected to be ideal materials room-temperature semiconductor detectors (RTSDs) as high-energy radiation. However, there is no report yet on the use of 2D X-ray detection, well how halide-modulated molecular assembly would affect their...
Abstract The perovskite layer contains a large number of charged defects that seriously impair the efficiency and stability solar cells (PSCs), thus it is essential to develop an effective passivation strategy heal them. Based on theoretical calculations, found enhancing electrostatic potential passivators can improve effect adsorption energy between passivators. Herein, modulation (EPM) developed design for highly efficient stable PSCs. With EPM strategy, 1‐phenylethylbiguanide (PEBG)...
Abstract Inspired by biological processes, feature learning techniques, such as deep learning, have achieved great success in various fields. However, since organs may operate differently from semiconductor devices, models usually require dedicated hardware and are computation-complex. High energy consumption has made model growth unsustainable. We present an approach that directly implements using physics to minimize disparity between hardware. Following this approach, a technique based on...