A5076516800- 2D Materials and Applications
- MXene and MAX Phase Materials
- Perovskite Materials and Applications
- Graphene research and applications
- Advanced biosensing and bioanalysis techniques
- Quantum Dots Synthesis And Properties
- Luminescence and Fluorescent Materials
- Molecular Junctions and Nanostructures
- Thin-Film Transistor Technologies
- Near-Field Optical Microscopy
- Polymer Surface Interaction Studies
- Graphene and Nanomaterials Applications
- Force Microscopy Techniques and Applications
- Mechanical and Optical Resonators
- Nanowire Synthesis and Applications
- Vibration Control and Rheological Fluids
- DNA and Nucleic Acid Chemistry
- Organic Light-Emitting Diodes Research
- Conducting polymers and applications
- ZnO doping and properties
- Chalcogenide Semiconductor Thin Films
- Structural Engineering and Vibration Analysis
- Vibration and Dynamic Analysis
Evanston Hospital
2024
Australian National University
2018-2022
Canberra (United Kingdom)
2018-2020
Shenzhen University
2019
Institute for Basic Science
2014-2017
Sungkyunkwan University
2013-2017
Incheon National University
2013
Abstract 2D materials based on main group element compounds have recently attracted significant attention because of their rich stoichiometric ratios and structure motifs. This review focuses the phases in various binary including III–VI, IV–VI, V–VI, III–V, IV–V, V–V materials. Reducing 3D to introduces confinement surface effects as well stabilizes unstable form. Their crystal structures, stability, preparation, applications are summarized theoretical predictions experimental explorations....
The discovery of 2D organic semiconductors atomically thin structures has attracted great attention due to their emerging optical, electronic, optoelectronic and mechatronic properties. Recent progress in such nanostructures opened new opportunities for engineering material properties many ways, as, 0D/1D/2D nanoparticles hybridization, strain engineering, atomic doping etc. Moreover, exhibit a unique feature bio–functionality are highly sensitive bio-analytes. Such peculiar behavior...
Vertically stacked van der Waals (vdW) heterostructures have been suggested as a robust platform for studying interfacial phenomena and related electric/optoelectronic devices. While the interlayer Coulomb interaction mediated by vdW coupling has extensively studied carrier recombination processes in diode transport, its correlation with tunneling transport not elucidated. Here, contrast is reported between drift photocurrents tailored strength MoSe2 /MoS2 hetero-bilayers (HBs). The...
Monolayer transition metal dichalcogenides (TMDs) are atomically thin semiconductor films that ideal platforms for the study and engineering of quantum heterostructures optoelectronic applications. We present a simple method fabrication TMD containing MoSe2 dots (QDs) MoS2 or WSe2 monolayer. The strong modification photoluminescence Raman spectra includes quenching QDs varied spectral weights trions monolayers were observed, suggesting charge transfer occurring in these heterostructures....
One of the most fundamental parameters any photovoltaic material is its quasi-Fermi level splitting (∆µ) under illumination. This quantity represents maximum open-circuit voltage (Voc ) that a solar cell fabricated from can achieve. Herein, contactless, nondestructive method to quantify this parameter for atomically thin 2D transition metal dichalcogenides (TMDs) reported. The technique applied upper limits Voc possibly be achieved monolayer WS2 , MoS2 WSe2 and MoSe2 -based cells, they are...
The interlayer interactions and coupling of mTMD–metal junction determine the performance corresponding optoelectronic devices.
Abstract Since the Ti 3 C 2 was discovered in 2011, family of MXenes has attracted much attention. offer great potential tuning many fundamental properties by synthesis new structures. The methods MXene mainly require steps including immersing a MAX phase hydrofluoric acid (HF) and processing at high temperatures. However, HF may be hard to acquire countries temperatures cause risk issues. In this article, simple cost‐effective T x quantum dots (QDs) via chemical solution method that follows...
The optical and electrical properties of monolayer transition-metal dichalcogenides (1L-TMDs) are critically influenced by two dimensionally confined exciton complexes. Although extensive studies on controlling the 1L-TMDs through external doping or defect engineering have been carried out, effects excess charges, defects, populations complexes light emission not yet fully understood. Here, we present a simple chemical treatment method for n-dope 1L-TMDs, which also enhances their...
Abstract MXenes are a rapidly growing family of 2D materials. Their unique combination metallic conductivity, hydrophilicity, and highly charged surfaces endow them with excellent electrochemical performance. Appropriate surface functional groups determine their semiconducting properties. The wide selection various MXene structures enable tunable work functions bandgaps, making prime candidates for many optoelectronic applications. In addition, the discovery organic semiconductors having...
Organic-inorganic (O-I) heterostructures, consisting of atomically thin inorganic semiconductors and organic molecules, present synergistic enhanced optoelectronic properties with a high tunability. Here, we develop class air-stable vertical O-I heterostructures comprising monolayer transition-metal dichalcogenides (TMDs), including WS2, WSe2, MoSe2, on top tetraphenylethylene (TPE) core-based aggregation-induced emission (AIE) molecular rotors. The created yields photoluminescence (PL)...
We report the controllable nanosized local thinning of multi-layer (2 L and 3 L)-thickness MoS2 films down to monolayer (1 L) thickness using simple method annealing in a dry oxygen atmosphere. The temperature was optimized range 240 °C 270 for 1.5 h, 1 thick pits were developed on uniform film 2 grown chemical vapor deposition method. characterized formation nanoscale confocal photoluminescence (PL) Raman spectroscopy. observed that PL intensity increased frequency shifted, representative...
Two-dimensional materials (2Dm) offer a unique insight into the world of quantum mechanics including van der Waals (vdWs) interactions, exciton dynamics and various other nanoscale phenomena.
We studied the tuning of structural and optical properties ZnO thin film its correlation to efficiency inverted solar cell using plasma-enhanced atomic layer deposition (PEALD). The sequential injection DEZn O2 plasma was employed for film. As growth temperature increased from 100 °C 300 °C, crystallinity improved amorphous highly ordered (002) direction ploy-crystal due self crystallization. Increasing oxygen time in PEALD process also introduces growing hexagonal wurtzite phase...
We demonstrate a simple method of stretching DNA to its full length, suitable for optical imaging and atomic force microscopy (AFM). Two competing forces on the molecules, which are electrostatic attraction between positively charged dye molecules (YOYO-1) intercalated into negatively surface glass substrate, centrifugal rotating mainly responsible effective dispersion single strands DNA. The density stretched could be controlled by concentration dye-stained solution. Stretching was...
Organic/inorganic hybrid structures have been widely studied because of their enhanced physical and chemical properties. Monolayers transition metal dichalcogenides (1L-TMDs) organic nanoparticles can provide a hybridization configuration between zero- two-dimensional systems with the advantages convenient preparation strong interface interaction. Here, we present such system made by dispersing π-conjugated (tris (8-hydroxyquinoline) aluminum(III)) (Alq3) (NPs) on 1L-MoS2. Hybrids Alq3...
Monolayer MoS 2 (1L-MoS ) is an ideal platform to examine and manipulate two dimensionally confined exciton complexes, which provides a large variety of modulating the optical electrical properties 1L-MoS . Extensive studies external doping hybridization exhibit possibilities engineering performance However, biomodifications characterization applications such hybrid structures are rarely reported. In this paper, we present bio-MoS structure fabricated by laterally stretching strands DNAs on...
Ferrocene (Fc)-based disulfide molecules of various lengths with amino acid scaffolds and alkane or oligo(phenylene-ethynylene) (OPE) bridges are used in a mixed SAM di-(ethylene oxide) terminal mercaptoundecanol diluent (PEG
Study of biological molecule DNA has contributed to developing many breaking thoughts and wide applications in multidisciplinary fields, such as genomic, medical, sensing forensic fields. Stretching molecules is an important supportive tool for AFM or spectroscopic studies a single molecular level. In this article, we established simple method stretching (to its full length) that occurred on rotating negatively-charged surface glass substrate. The isolation was attained by the two...
Two-dimensional atomically thin transition metal dichalcogenides (TMDs) show a remarkable light–matter interaction and atomic thickness. In article number 1900522, Mike Tebyetekerwa, Yuerui Lu, Daniel Macdonald, Hieu T. Nguyen, co-workers quantify the possible maximum open-circuit voltages, one of most important photovoltaic parameters, monolayer TMD-based solar cells. The values they determine reveal potential TMDs for high-voltage, ultralight, flexible, eye-transparent future devices.
The nonlinear dynamics of a directly forced clamped-clamped-free-free magneto-rheological elastomer (MRE) sandwich shell has been experimentally investigated. Experiments have conducted on an aluminium shallow (shell A) and MRE-aluminium with single curvature B). An electrodynamic shaker used to force shells A B in the vicinity their fundamental resonance frequency; laser displacement sensor measure vibration amplitude construct frequency-response curves. It was observed that for A), at...