A5018390151- 2D Materials and Applications
- MXene and MAX Phase Materials
- Graphene research and applications
- Electrocatalysts for Energy Conversion
- Silicon and Solar Cell Technologies
- Graphene and Nanomaterials Applications
- Nanowire Synthesis and Applications
- Thin-Film Transistor Technologies
- Quantum Dots Synthesis And Properties
- Semiconductor materials and interfaces
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Copper-based nanomaterials and applications
- Advanced Photocatalysis Techniques
- Carbon Nanotubes in Composites
- Bone Tissue Engineering Materials
- Silicon Nanostructures and Photoluminescence
- Advanced Condensed Matter Physics
- Molecular Junctions and Nanostructures
- Neuroscience and Neural Engineering
- ZnO doping and properties
- Multiferroics and related materials
- Force Microscopy Techniques and Applications
- Advanced Semiconductor Detectors and Materials
- Supramolecular Self-Assembly in Materials
Rutgers, The State University of New Jersey
2010-2016
Los Alamos National Laboratory
2015-2016
Atomic layers of two-dimensional (2D) materials have recently been the focus extensive research. This follows from footsteps graphene, which has shown great potential for ultrathin optoelectronic devices. In this paper, we present a comprehensive study on synthesis, characterization, and thin film photodetector application atomic InSe. Correlation between resonance Raman spectroscopy photoconductivity measurements allows us to systematically track evolution electronic band structure 2D InSe...
Abstract Hydrogen evolution reaction is catalysed efficiently with precious metals, such as platinum; however, transition metal dichalcogenides have recently emerged a promising class of materials for electrocatalysis, but these still low activity and durability when compared metals. Here we report simple one-step scalable approach, where MoO x /MoS 2 core-shell nanowires molybdenum disulfide sheets are exposed to dilute aqueous hydrazine at room temperature, which results in marked...
Human neural stem cells (hNSCs) cultured on graphene-nanoparticle hybrid structures show a unique behavior wherein the axons from differentiating hNSCs enhanced growth and alignment. We that axonal alignment is primarily due to presence of graphene underlying nanoparticle monolayer causes neuronal differentiation hNSCs, thus having great implications these hybrid-nanostructures for neuro-regenerative medicine. As service our authors readers, this journal provides supporting information...
Two dimensional transition metal dichalcogenides (2D TMDs) offer promise as opto-electronic materials due to their direct band gap and reasonably good mobility values. However, most metals form high resistance contacts on semiconducting TMDs such MoS2. The large contact limits the performance of devices. Unlike bulk materials, low cannot be stably achieved in 2D by doping. Here we build our previous work which demonstrated that it is possible achieve electrodes phase transformation. We show...
A fundamental understanding of the intrinsic optoelectronic properties atomically thin transition-metal dichalcogenides (TMDs) is crucial for its integration into high performance semiconductor devices. Here, we investigate transport chemical vapor deposition (CVD) grown monolayer molybdenum disulfide (MoS2) under photoexcitation using correlated scanning photocurrent microscopy and photoluminescence imaging. We examined effect local phase transformation underneath metal electrodes on...
Significant interest has grown in the development of earth-abundant and efficient catalytic materials for hydrogen generation. Layered transition metal dichalcogenides present opportunities electrocatalytic systems. Here, we report modification 1D MoOx/MoS2 core–shell nanostructures by lithium intercalation corresponding changes morphology, structure, mechanism H2 evolution. The nanowires exhibit significant improvement evolution properties after lithiation, reducing reaction (HER) onset...
Graphene oxide (GO) has emerged as a multifunctional material that can be synthesized in bulk quantities and solution processed to form large-area atomic layered photoactive, flexible thin films for optoelectronic devices. This is largely due the potential ability tune electrical optical properties of GO using functional groups. For successful application GO, it key understand evolution its undergoes phase transition from insulating optically active state electrically conducting with...
A fundamental understanding of the intrinsic optoelectronic properties atomically thin transition metal dichalcogenides (TMDs) is crucial for its integration into high performance semiconductor devices. Here, we investigate transport chemical vapor deposition (CVD) grown monolayer molybdenum disulfide (MoS2) under photo-excitation using correlated scanning photocurrent microscopy and photoluminescence imaging. We examined effect local phase transformation underneath electrodes on generation...
We have investigated the influence of localized surface plasmon effects due to spherical metal nanoparticles on amorphous silicon based thin film solar cells. By far, silver is most common used for plasmonics in However, it would be great interest, from a practical stand-point find less expensive metals, such as copper, aluminum, titanium and their alloys. Using two dimensional finite difference time domain method, we simulated variety observed optical properties. A noticeable conversion...
We report the effect of diameter on composition, optical, and electronic properties BiFeO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (BFO) nanofibers. Bismuth ferrite nanofibers with different (20 to 150nm) have been fabricated by a sol gel based electrospinning route. The quantum confinement has found influence photoconductivity, grain size optical A shift in band gap 2.1 eV was observed as result variation nanofiber diameter....
Nanohole structures were implemented at various layers in amorphous silicon thin film solar cells designed using 2D and 3D CAD software. Electrical optical properties of the photovoltaic cell are obtained by modeling such utility packages. Absorption improvement thereby conversion efficiency have been achieved over 300 to 600nm spectrum. In this paper, nanoholes placed on glass substrate/ transparent conducting oxide layer/ layer performances devices compared. Better performance was found...
Graphene-nanoparticle hybrid structures have been developed to control the behavior of human neural stem cells (hNSCs) in a unique manner. The axons from differentiated hNSCs, as described by Ki-Bum Lee and co-workers on page 5477, show enhanced growth alignment. While axonal alignment is primarily due presence graphene, underlying nanoparticle monolayer causes neuronal differentiation thus having great implications these hybrid-nanostructures for neuroregenerative medicine.