Browsing by Keywords "2D materials"
Now showing items 1-18 of 18
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Characterization of two-dimensional Ga1−xAlxN ordered alloys with varying chemical composition
(Elsevier, 2019)Similar to bulk semiconductors, alloying suggests a promising strategy to tailor the fundamental properties oftwo-dimensional (2D) systems with constituent composition. In that sense, detailed understanding of atomicstructure ... -
Chemical vapor transport synthesis of a selenium-based two-dimensional material
(TÜBITAK, 2018)Selenium-based layered materials, and in particular transition-metal diselenides (TMDSs), have intriguing properties in the monolayer limit. Materials such as MoSe2, WSe2, and NbSe2 display striking features such as ... -
Development of force fields for novel 2D materials for temperature dependent vibrational properties
(Bilkent University, 2019-09)A new era of nanodevice engineering has been started after fabricating graphene. This motivated vast number of researches for predicting, fabricating and utilizing 2D materials. Temperature dependent properties are ... -
Electric-field-induced reversible phase transitions in a spontaneously ion-Intercalated 2D metal oxide
(American Chemical Society, 2021-05-12)Electric field driven reversible phase transitions in two-dimensional (2D) materials are appealing for their potential in switching applications. Here, we introduce potassium intercalated MnO2 as an exemplary case. We ... -
First-principles investigation of armchair stanene nanoribbons
(Elsevier B.V., 2018)In this study, we systematically investigated the structural, electronic and optical properties of armchair stanene nanoribbons (ASNRs) by using the first-principles calculations. First, we performed full geometry optimization ... -
Formation and functionalization of boron phosphide monolayers
(Bilkent University, 2015-09)Since the synthesis of graphene with its unique properties has increased the focus on novel two dimensional (2D) materials, successively new 2D materials from either layered or non-layered materials have been synthesized ... -
Functionalization of group V monolayers and their compounds: alloying, doping and surface modification
(Bilkent University, 2020-11)There has been growing interest during the last decade in two-dimensional (2D) materials due to their important roles in various scientific and technological applications such as detectors, lasers and light emitting diodes. ... -
Geometric band properties in strained monolayer transition metal dichalcogenides using simple band structures
(American Institute of Physics, 2019)Monolayer transition metal dichalcogenides (TMDs) bare large Berry curvature hotspots readily exploitable for geometric band effects. Tailoring and enhancement of these features via strain is an active research direction. ... -
Investigation of new two-dimensional materials derived from stanene
(Elsevier, 2017-09)In this study, we have explored new structures which are derived from stanene. In these new proposed structures, half of the Sn atoms, every other Sn atom in two-dimensional (2D) buckled hexagonal stanene structure, are ... -
The mechanical characterization of two-dimensional materials (WS2, MoS2, and graphene) and the effect of defects on young`s modulus of CVD grown single-layer graphene
(Bilkent University, 2017-11)With the first isolation of graphene two-dimensional (2D) materials attracted the enormous interest of many researchers. Owing to extraordinary properties and atomic thickness 2D materials have many applications in gas ... -
MoS2 phototransistor sensitized by colloidal semiconductor quantum wells
(Wiley-VCH Verlag, 2020-12)A phototransistor built by the assembly of 2D colloidal semiconductor quantum wells (CQWs) on a single layer of 2D transition metal dichalcogenide (TMD) is displayed. This hybrid device architecture exhibits high efficiency ... -
A novel method for thermal conductivity measurement of two dimensional materials
(Bilkent University, 2019-09)Thermal conductivity is a quantity which governs the heat transfer in a material. After increasing importance of efficiency in power generation systems and cooling mechanisms in micro-structures, many measurement methods ... -
Real time optical observation of the synthesis of novel 2D materials and investigation of their fundamental properties
(Bilkent University, 2021-03)Two-dimensional transition metal dichalcogenide (2D TMDC) with superb phys-ical and chemical properties, used as the active material for various devices. The on-going primary focus is their reliable high-throughput synthesis ... -
Strain-induced structural phase transition in GeN monolayer
(Elsevier BV, 2021-11-30)The recent synthesis of SiP, SiAs, GeP, and GeAs monolayers has brought two-dimensional (2D) group IV–V systems into the limelight. To date, all the fabricated structures of this class belong to the C2/m space group which ... -
Trion-mediated förster resonance energy transfer and optical gating effect in WS2/hBN/MoSe2 heterojunction
(American Chemical Society, 2020)van der Waals two-dimensional layered heterostructures have recently emerged as a platform, where the interlayer couplings give rise to interesting physics and multifunctionalities in optoelectronics. Such couplings can ... -
Tunable plasmon-phonon polaritons in anisotropic 2D materials on hexagonal boron nitride
(De Gruyter Open, 2020)Mid-infrared (MIR) plasmon-phonon features of heterostructures composing of a plasmonic anisotropic two-dimensional material (A2DM) on a hexagonal boron nitride (hBN) film are analyzed. We derive the exact dispersion ... -
Two-dimensional pnictogens: a review of recent progresses and future research directions
(American Institute of Physics, 2019)Soon after the synthesis of two-dimensional (2D) ultrathin black phosphorus and fabrication of field effect transistors thereof, theoretical studies have predicted that other group-VA elements (or pnictogens), N, As, Sb, ... -
Ultrafast spectroscopy of voltage reconfigurable graphene saturable absorbers in the visible and near infrared
(IOP, 2019-04-23)We describe a detailed experimental investigation of the ultrafast nonlinear response of a voltagecontrolled graphene-gold saturable absorber (VCG-gold-SA) by employing femtosecond pump probe spectroscopy. Visible and ...
