A5005457196- Perovskite Materials and Applications
- Magnetic properties of thin films
- 2D Materials and Applications
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Electronic and Structural Properties of Oxides
- Chalcogenide Semiconductor Thin Films
- Adhesion, Friction, and Surface Interactions
- Solid-state spectroscopy and crystallography
- Graphene research and applications
- Transition Metal Oxide Nanomaterials
- Copper Interconnects and Reliability
- MXene and MAX Phase Materials
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Advanced Memory and Neural Computing
- Nanowire Synthesis and Applications
- Semiconductor materials and devices
- Magnetic Properties and Applications
- Ferroelectric and Piezoelectric Materials
- Advanced Sensor and Energy Harvesting Materials
- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
Rensselaer Polytechnic Institute
2016-2025
Northwestern Polytechnical University
2022-2024
University of Houston
2009-2024
Jiangxi Normal University
2023
University of Michigan
2009-2022
Third Xiangya Hospital
2022
Central South University
2022
New Mexico State University
2022
Massachusetts Institute of Technology
2021
Hubei University of Arts and Science
2019
Healing away the dendrites The formation of lithium during charge-discharge cycles limits development metal batteries, because can cause electrical shorting cells. A number tricks have been used to try prevent dendrite formation. Li et al. took opposite approach (see Perspective by Mukhopadhyay and Jangid). They operated their cells at higher current densities, under which one would expect form owing nucleation rates. However, these conditions, that started heated up annealed, leading...
In this paper, we report a technique that uses piezoelectric polyvinylidene fluoride (PVDF) microbelts to convert the energy from low-speed air flow electricity via their resonant oscillation. The micrometre thick PVDF thin films were fabricated by top-down reactive ion etching process, where thickness was controlled time and phase well preserved. thickness, speed electrical output relationship predicted theoretically characterized experimentally. able generate sufficient low for sustained...
Piezocatalysis uses piezopotential to modulate charge carrier energetics (see picture), thus allowing the direct enhancement or suppression of electrochemical reactions that occur at a piezoelectric material/solution interface. Such conversion mechanical chemical energy is shown by H2 evolution achieved straining material in aqueous medium. Detailed facts importance specialist readers are published as ”Supporting Information”. documents peer-reviewed, but not copy-edited typeset. They made...
Three-dimensional (3D) nanowire (NW) networks are promising for designing high-performance photoelectrochemical (PEC) electrodes owing to their long optical path efficient light absorption, high-quality one-dimensional conducting channels rapid electron-hole separation and charge transportation, as well high surface areas fast interfacial transfer electrochemical reactions. By growing titanium dioxide (TiO(2)) nanorods (NRs) uniformly on dense Si NW array backbones, we demonstrated a novel...
Abstract The functionality and performance of a semiconductor is determined by its bandgap. Alloying, as for instance in In x Ga 1-x N, has been mainstream strategy tuning the Keeping alloys miscibility gap (being homogeneous), however, non-trivial. This challenge now being extended to halide perovskites – an emerging class photovoltaic materials. While bandgap can be conveniently tuned mixing different halogen ions, CsPb(Br I ) 3 , so-called mixed-halide suffer from severe phase separation...
Spin and valley degrees of freedom in materials without inversion symmetry promise previously unknown device functionalities, such as spin-valleytronics. Control material with electric fields (ferroelectricity), while breaking additional symmetries, including mirror symmetry, could yield phenomena where chirality, spin, valley, crystal potential are strongly coupled. Here we report the synthesis a halide perovskite semiconductor that is simultaneously photoferroelectricity switchable chiral....
Herein we demonstrate that intrinsically fluorescent zinc oxide (ZnO) nanowires (NWs) can be adopted for molecularly targeted imaging of cancer cells, after they are functionalized to render water solubility, biocompatibility, and low cellular toxicity. Optical integrin α(v)β(3) on U87MG human glioblastoma cells was achieved with RGD peptide-conjugated green ZnO NWs, which opened up new avenues research investigating NW-based agents in tumor vasculature-targeted molecular drug delivery.
The exploration of emerging materials physics and prospective applications two-dimensional greatly relies on the growth control their thickness, phases, morphologies, film–substrate interactions. Though substantial progress has been made for development films from conventional layered bulky materials, particular challenges remain obtaining ultrathin, single crystalline, dislocation-free intrinsically non-van der Waals-type three-dimensional materials. In this report, with successful...
Through a process of photoelectrochemical (PEC) water splitting, we demonstrated an effective strategy for engineering the barrier height heterogeneous semiconductor interface by piezoelectric polarization, known as piezotronic effect. A consistent enhancement or reduction photocurrent was observed when tensile compressive strains were applied to ZnO anode, respectively. The variation is attributed changed at ZnO/ITO interface, which result remnant potential across due nonideal free charge...
This paper numerically estimates the potential, output power and energy conversion efficiency of piezoelectric nanostructures, including rectangular nanowires (NWs), hexagonal NWs, two-dimensional vertical thin films (the nanofins). Static analysis studies maximum potential that can be produced by a BaTiO3 NW, ZnO nanofin when they are subjected to constant external force. Dynamic is performed study generation ability via vibration these nanostructures agitated ambient energy. NW selected as...
Organic–inorganic hybrid perovskite solar materials, being low-cost and high-performance, are promising for large-scale deployment of the photovoltaic technology. A key challenge that remains to be addressed is toxicity these materials since high-efficiency cells made lead-containing in particular, CH3NH3PbI3. Here, based on first-principles calculation, we search lead-free split-anion approach, where replace Pb with non-toxic elements while introducing dual anions (i.e., splitting anion...
One-dimensional nanoscale epitaxial arrays serve as a great model in studying fundamental physics and for emerging applications. With an increasing focus laid on the Cs-based inorganic halide perovskite out of its outstanding material stability, we have applied vapor phase epitaxy to grow well aligned horizontal CsPbX3 (X: Cl, Br, or I their mixed) nanowire large scale mica substrate. The as-grown features triangular prism morphology with typical length ranging from few tens micrometers...
Recently, there has been an explosive growth in research based on hybrid lead–halide perovskites for photovoltaics owing to rapid improvements efficiency. The advent of these materials solar applications led widespread interest understanding the key enabling properties materials. This resulted renewed related compounds and a search that may replicate defect-tolerant long lifetimes lead-halide perovskites. Given pace development field, rises efficiencies systems have outpaced more basic...
Abstract Crystallographic dislocation has been well-known to be one of the major causes responsible for unfavorable carrier dynamics in conventional semiconductor devices. Halide perovskite exhibited promising applications optoelectronic However, how impacts its ‘defects-tolerant’ halide is largely unknown. Here, via a remote epitaxy approach using polar substrates coated with graphene, we synthesize epitaxial controlled density. First-principle calculations and molecular-dynamics...