A5101460474- Luminescence Properties of Advanced Materials
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Photochemistry and Electron Transfer Studies
- 2D Materials and Applications
- Electrocatalysts for Energy Conversion
- Radiation Detection and Scintillator Technologies
- Electronic and Structural Properties of Oxides
- Luminescence and Fluorescent Materials
- Molecular Sensors and Ion Detection
- Semiconductor Lasers and Optical Devices
- Sulfur Compounds in Biology
- CO2 Reduction Techniques and Catalysts
- Glass properties and applications
- Thermography and Photoacoustic Techniques
- Electrochemical Analysis and Applications
- Ga2O3 and related materials
- Acoustic Wave Resonator Technologies
- Spectroscopy and Quantum Chemical Studies
- Porphyrin and Phthalocyanine Chemistry
- Digital Radiography and Breast Imaging
- Solid State Laser Technologies
- Carbon dioxide utilization in catalysis
- Nitric Oxide and Endothelin Effects
- Advanced Fiber Laser Technologies
Argonne National Laboratory
2019-2025
Xi'an University of Technology
2023-2024
Northwestern University
2019-2022
Alex's Lemonade Stand Foundation
2021
Improving the photocatalytic efficiency of a fully noble-metal-free system for CO2 reduction remains fundamental challenge, which can be accomplished by facilitating electron delivery as consequence exploiting intermolecular interactions. Herein, we have designed two Cu(I) photosensitizers with different pyridyl pendants at phenanthroline moiety to enable dynamic coordinative interactions between sensitizers and cobalt macrocyclic catalyst. Compared parent photosensitizer, one...
Methylammonium lead iodide (MAPbI3) perovskite nanocrystals (NCs) offer desirable optoelectronic properties with prospective utility in photovoltaics, lasers, and light-emitting diodes (LEDs). Structural rearrangements of MAPbI3 response to photoexcitation, such as lattice distortions phase transitions, are particular interest, these engender long carrier lifetime bolster diffusion. Here, we use variable temperature X-ray diffraction (XRD) synchrotron-based transient (TRXRD) investigate...
In this work, dual-core antiresonant hollow core fibers (AR-HCFs) are numerically demonstrated, based on our knowledge, for the first time. Two fiber structures proposed. One is a composite of two single-core nested nodeless AR-HCFs, exhibiting low confinement loss and circular mode profile in each core. The other has relatively simple structure, with whole elliptical outer jacket, presenting uniform wide transmission band. modal couplings AR-HCFs rely unique mechanism that transfers power...
Metal nitrides are a promising non-toxic, inexpensive, and durable material for photothermal applications. The properties of titanium nitride measured using time-resolved X-ray diffraction following optical excitation.
Symmetry control is essential for realizing unconventional properties, such as ferroelectricity, nonlinear optical responses, and complex topological order, thus it holds promise the design of emerging quantum photonic systems. Nevertheless, fast reversible symmetry in materials remains a challenge, especially nanoscale Here, changes are unveiled colloidal lead chalcogenide dots on picosecond timescales. Using combination ultrafast electron diffraction total X-ray scattering, conjunction...
We investigate the ultrafast electronic and thermal properties of bulk amorphous cobalt oxide water oxidation catalysts cobalt-phosphate (CoPi) borate (CoBi) using optical pump/X-ray probe correlated with in situ electrochemical transient absorption spectroscopy. The signature a light-generated intermediate species is compared to steady-state heating X-ray spectroscopy (XAS), suggestive non-thermal contributions charge transfer formation on timescales. With Co K-edge spectroscopy, we observe...
Picosecond optical and X-ray absorption spectroscopies with time-dependent density functional theory revealed the reaction pathways, electronic structural conformations of Ir-Co hydrogen evolution photocatalysts. The dyad bearing 2-phenylpyridine ancillary ligands produced more photoreduced Co(II) than its 2-phenylisoquinoline analogue. These findings are important for designs earth-abundant photosensitizers photocatalytic applications.
Nanoplatelets (NPLs)—colloidally synthesized, spatially anisotropic, two-dimensional semiconductor quantum wells—are of intense interest owing to exceptionally narrow transition line widths, coupled with solution processability and bandgap tunability. However, given large surface areas undercoordinated bonding at facet corners edges, excitation under sufficient intensities may induce anisotropic structural instabilities that impact desired properties. We employ time-resolved X-ray...
Three homoleptic Cu(<sc>i</sc>) dimeric photosensitizers are studied through ultrafast X-ray and optical absorption spectroscopy. The complexes show distinct excited state lifetimes, due to the solvent type spacers' flexibilities between Cu centres.
Abstract We study the light emission of plasmonic-luminescent hybrid nanostructures consisting Ag nanoparticles (NPs) embedded in europium oxide (EuO X ). The NPs present a bidimensional organization and they optically behave as oblate spheroids. photoluminescence (PL) spectral response evolves from narrow red characteristic Eu 3+ ions absence to broad blue-green band associated with 2+ when layer is present. This behavior not related change /Eu ratio, which verified by compositional...
ZLANI is a fluorozirconate glass consisting of Zr, La, Al, Na, In and F being developed for use as the matrix in multilayer optical nanocomposites containing BaCl2 rare earth elements, order to create designer fluorochlorozirconate (FCZ) ZBLAN-based glass-ceramics with potential applications including up-and down-convertors photovoltaics [1].To better control property matrix, this work we explored effect heat treatment on composition, structure thin films understanding about how these three...
Abstract In computed radiography, scattering of the stimulation light by storage phosphor crystals in imaging plates negatively impacts spatial resolution. Storage with thinner layers have been developed to reduce distance and increase resolution, although at expense reduced x‐ray absorption. The authors hypothesize that a transparent or translucent nanostructured film, containing much higher percentage than achievable bulk glass‐ceramic materials made conventional methods, may acceptable...