Browsing School of Physics by Subject "2D materials"
Now showing items 1-15 of 15
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Dependence of Photocurrent Enhancements in Hybrid Quantum Dot-MoS2 Devices on Quantum Dot Emission Wavelength
(2019)The spectral dependence of nonradiative energy transfer (NRET) from three spectrally different quantum dot (QD) ensembles to monolayer MoS2 is reported. The QDs with peak emission wavelengths of 450, 530, and 630 nm induce ... -
Dependence of Photocurrent Enhancements in Quantum Dot (QD)-Sensitized MoS2 Devices on MoS2 Film Properties
(2018)This report demonstrates highly efficient nonradiative energy transfer (NRET) from alloyed CdSeS/ZnS semiconductor nanocrystal quantum dots (QDs) to MoS2 films of varying layer thicknesses, including pristine monolayers, ... -
Exfoliation and sensing application of 2D - materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)In the past decade, graphene and layered material such as Transition metal dichalcogenides (TMDs) and Transition metal oxides (TMOs) have been investigated for their importance in several applications. For example, these ... -
Influence of graphene oxide/Ag nanoparticle composites on the fluorescence properties of organic dyes
(2017)Graphene oxide/Ag nanoparticle (AgGO) composite materials have been proposed for surface enhanced Raman scattering (SERS) detection of fluorescent dye molecules. In this study we examine the role of the different components ... -
Interfacing 2D VS2 with Janus MoSSe: Antiferromagnetic electric polarization and charge transfer driven Half-metallicity
(2021)Half metallic 2D materials with 100% spin polarization at the fermi level can be applied to spintronics to enhance the device efficiency. We identified that the Janus MoSSe monolayer can induce halfmetallicity in the VS2 ... -
Liquid Phase Exfoliation of 2D Materials under Ambient Conditions
(Trinity College Dublin. School of Physics. Discipline of Physics, 2021)A technique developed by the Coleman group in 2008 called liquid phase exfoliation (LPE) has been shown to be effective for the delamination of any material exhibiting a layered structure. Molybdenum dioxide ... -
Liquid-Phase Exfoliation of Nonlayered Non-Van-Der-Waals Crystals into Nanoplatelets
(2023)For nearly 15 years, researchers have been using liquid-phase exfoliation (LPE) to produce 2D nanosheets from layered crystals. This has yielded multiple 2D materials in a solution-processable form whose utility has been ... -
Mechanisms of Liquid Phase Exfoliation for the Production of Graphene
(2020)Liquid- phase exfoliation (LPE) is the principal method of producing two-dimensional (2D) materials such as graphene in large quantities with a good balance between quality and cost and is now widely adopted by both the ... -
Nonradiative Energy Transfer and Photocurrent Enhancements in Hybrid Quantum Dot-MoS<inf>2</inf> Devices
(2018)The energy transfer mechanism leading to highly efficient nonradiative energy transfer (NRET) from quantum dots (QDs) to monolayer MoS 2 devices has been investigated via a spectral dependence study. The spectral dependence ... -
The Optics and Photonics of Two-Dimensional Nanomaterials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)In this work, by using a broadspectrum angle-resolved absorption technique, we studied enhanced absorption from multi-layered materials with near-zero dielectric permittivity in the near-infrared. These materials, known ... -
Optimisation of Electrolytically-gated Thin Film Transistors made from Printed Nanosheet Networks
(Trinity College Dublin. School of Physics. Discipline of Physics, 2022)Networks of two-dimensional nanosheets show great potential in a wide variety of different applications, with particular focus on the area of printed electronics. One of the main issues facing such nanosheet network ... -
Printed Electronics from Solution-Processed 2D Materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2018)The fervour created in the wake of the graphene gold-rush has fuelled investigative momentum over the last decade. The maturity of liquid-phase processing has meant that solution-processed layered crystals can be now be ... -
Self-Assembly of Atomically Thin Chiral Copper Heterostructures Templated by Black Phosphorus
(2019)The fabrication of 2D systems for electronic devices is not straightforward, with top‐down low‐yield methods often employed leading to irregular nanostructures and lower quality devices. Here, a simple and reproducible ... -
Solution Processed Semiconducting Nanosheet Networks Towards Optoelectronic Applications
(Trinity College Dublin. School of Physics. Discipline of Physics, 2024)Two-dimensional (2D) semiconducting transition metal chalcogenides (TMDs) are attractive materials owing to their superb electronic and optoelectronic properties. The great advancement of material exfoliation and thin film ... -
Solution-Processed Heterojunction Photodiodes Based on WSe2 Nanosheet Networks
(2023)Solution-processed photodetectors incorporating liquid-phase-exfoliatedtransition metal dichalcogenide nanosheets are widely reported. However,previous studies mainly focus on the fabrication of photoconductors, ratherthan ...