A5032996297- Ferroelectric and Piezoelectric Materials
- Advanced Photocatalysis Techniques
- Multiferroics and related materials
- CO2 Reduction Techniques and Catalysts
- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- Acoustic Wave Resonator Technologies
- Magnetic and transport properties of perovskites and related materials
- 2D Materials and Applications
- Solar-Powered Water Purification Methods
- Covalent Organic Framework Applications
- Dielectric properties of ceramics
- Advanced Thermoelectric Materials and Devices
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
- Thermal properties of materials
- MXene and MAX Phase Materials
- Electrocatalysts for Energy Conversion
- Quantum Dots Synthesis And Properties
- Physics of Superconductivity and Magnetism
- Graphene research and applications
Soochow University
2022-2024
Effective control of heat transfer is vital for energy saving and carbon emission reduction. In contrast to achievements in electrical conduction, active much more challenging. Ferroelectrics are promising candidates thermal switching as a result their tunable domain structures. However, ratios ferroelectrics low (<1.2). We report that high-quality antiferroelectric PbZrO3 epitaxial thin films exhibit high-contrast (>2.2), fast-speed (<150 nanoseconds), long-lifetime (>107) under small...
Photoelectrochemical (PEC) conversion of CO2 in an aqueous medium into high-energy fuels is a creative strategy for storing solar energy and closing the anthropogenic carbon cycle. However, rational design catalytic architectures to selectively efficiently produce target product such as CO has remained grand challenge. Herein, efficient selective Si photocathode production reported by utilizing TiO2 interlayer bridge Au nanoparticles n+ p-Si. The can not only effectively protect passivate...
PbZrO
Converting CO2 to value-added chemicals through a photoelectrochemical (PEC) system is creative approach toward renewable energy utilization and storage. However, the rational design of appropriate catalysts while being effectively integrated with semiconductor photoelectrodes remains considerable challenge for achieving single-carbon products high efficiency. Herein, we demonstrate novel sulfidation-induced strategy in situ grown sulfide-derived Ag nanowires on Si photocathode (denoted as...
Interfacial Bi–S bonds form atomic-scale charge-flow highways to speed up the charge flow, promote bulk carrier separation, and enhance photoelectrochemical performance of CIS/BWO photoanodes via forming Z-scheme heterojunctions.
Transition metal thiophosphate, CuInP2S6 (CIPS), has recently emerged as a potentially promising material for photoelectrochemical (PEC) water splitting due to its intrinsic ferroelectric polarization spontaneous photocarrier separation. However, the poor kinetics of hydrogen evolution reaction (HER) greatly limits practical applications. Herein, we report self-enhancing photocatalytic behavior CIPS photocathode chemically driven oxygen incorporation by photoassisted acid oxidation. The...
Abstract Artificial photocatalytic CO 2 reduction (CO R) holds great promise to directly store solar energy into chemical bonds. The slow charge and mass transfer kinetics at the triphasic solid–liquid–gas interface calls for rational design of heterogeneous photocatalysts concertedly boosting interfacial transfer, local concentration, exposure active sites. To meet these requirements, in this study heterostructures CdS/MOL (MOL = metal–organic layer) furnishing different redox Co sites are...
Multiferroic materials consisting of multiple and mutually coupled order parameters including polarization can have an intriguing response to applied electric field, give rise the so-called cross-caloric effect, as nondipolar degrees freedom contribute electrocaloric effect (ECE) via cross couplings dipoles. In this study, we use a first-principles-based effective Hamiltonian combined with Monte Carlo simulations investigate such systematically in well-known room-temperature multiferroic...
Anomalous electrocaloric effect (ECE) with decreasing temperature upon application of an electric field is known to occur in antiferroelectrics (AFEs), and previous understanding refers the field-induced canting dipoles if there no phase transitions. Here, we use a first-principle-based method study ECE Nd-substituted BiFeO3 (BNFO) perovskite solid solutions, which has Pnma-type AFE ground state. We demonstrate another scenario achieve explain anomalous ECE, emphasizing that explicit...
Finding two-dimensional (2D) materials with ferroelectricity is of great interests towards polarization-related applications and nanosized devices. Despite much theoretical efforts that predict the existence novel 2D ferroelectrics, only a small portion have been realized in experiments. The well-known transition-metal dichalcogenide molybdenum disulfide (${\mathrm{MoS}}_{2}$) monolayer was predicted to ferroelectric $d1T$ polymorph resulting from condensation soft phonons centrosymmetric...
<title>Abstract</title> Dielectric ceramics possess a unique competitive advantage in electronic systems due to their high-power density and excellent reliability. Na0.5Bi0.5TiO3 (NBT)-based ceramics, one type of extensively studied energy storage dielectric, however, often experience A-site element volatilization Ti4+ reduction during high-temperature sintering. These issues may result increased loss, reduced polarization low dielectric breakdown electric field (EB), ultimately making it...
Organic–inorganic hybrid perovskite MAPbI3 (MA = CH3NH3) has been rapidly growing as one of the most promising materials for future solar cells. One mechanisms that contribute to its high efficiency is related ferroelectric ordering MA molecules inside inorganic framework. Here, we use first-principles calculations explore structural distortions can lead dipolar organic in tetragonal phase, which relevant room-temperature applications. We find existence antiphase rotation PbI6 octahedra a...