Explanipedia

Comprehensive benchmarking and user guide for the characterization of CVD-grown transition metal chalcogenides Open

Tywoniuk Bartłomiej, Michael J. Mohn, Yanfei Zhao, Beata M. Szydłowska, Oliver Hartwig , et al. · 2025

Since the discovery of graphene in 2004, there has been rapid progress in research on two-dimensional (2D) material’s potential applications with significant impact. Efforts to bring 2D materials closer to industrial production, quality as…

Identification of Ubiquitously Present Polymeric Adlayers on 2D Transition Metal Dichalcogenides Open

Rita Tilmann, Cian Bartlam, Oliver Hartwig, Tywoniuk Bartłomiej, Nikolas Dominik , et al. · 2023

The interest in 2D materials continues to grow across numerous scientific disciplines as compounds with unique electrical, optical, chemical, and thermal characteristics are being discovered. All these properties are governed by an all-sur…

Synthesis and thermal stability of TMD thin films: A comprehensive XPS and Raman study Open

Conor P. Cullen, Oliver Hartwig, Cormac Ó Coileáin, John B. McManus, Lisanne Peters , et al. · 2021

Transition metal dichalcogenides (TMDs) have been a core constituent of 2D material research throughout the last decade. Over this time, research focus has progressively shifted from synthesis and fundamental investigations, to exploring t…

Synthesis and thermal stability of TMD thin films: A comprehensive XPS\n and Raman study Open

Conor P. Cullen, Oliver Hartwig, Cormac Ó Coileáin, John B. McManus, Lisanne Peters , et al. · 2021

Transition metal dichalcogenides (TMDs) have been a core constituent of 2D\nmaterial research throughout the last decade. Over this time, research focus\nhas progressively shifted from synthesis and fundamental investigations, to\nexplorin…

Synthesis and characterisation of thin-film platinum disulfide and platinum sulfide Open

Conor P. Cullen, Cormac Ó Coileáin, John B. McManus, Oliver Hartwig, David McCloskey , et al. · 2021

Group-10 transition metal dichalcogenides (TMDs) are rising in prominence within the highly innovative field of 2D materials. While PtS2 has been investigated for potential electronic applications, due to its high charge-carrier mobility a…

Synthesis and characterisation of thin-film platinum disulfide and\n platinum sulfide Open

Conor P. Cullen, Cormac Ó Coileáin, John B. McManus, Oliver Hartwig, David McCloskey , et al. · 2021

Group-10 transition metal dichalcogenides (TMDs) are rising in prominence\nwithin the highly innovative field of 2D materials. While PtS2 has been\ninvestigated for potential electronic applications, due to its high\ncharge-carrier mobilit…

Highly Selective Non‐Covalent On‐Chip Functionalization of Layered Materials Open

Rita Tilmann, Corinna Weiß, Conor P. Cullen, Lisanne Peters, Oliver Hartwig , et al. · 2021

Non‐covalent functionalization of layered 2D materials is an essential tool to modify and fully harness their optical, electrical, and chemical properties. Herein, a facile method enabling the selective formation of self‐assembled monolaye…

“Only a god can save us:” A Reconstruction and Defense of Durkheim’s Account of Religious Life, with Continual Reference to Heidegger and Kierkegaard Open

Conor P. Cullen · 2021

What do religions do and how do they do it? In The Elementary Forms of Religious Life, Émile Durkheim claims that religions are “grounded in and express the real” and center upon a set of ritualized practices that enact and embody in a dis…

Large-area growth of MoS2 at temperatures compatible with integrating back-end-of-line functionality Open

Jun Lin, Scott Monaghan, Neha Sakhuja, Farzan Gity, Ravindra Kumar Jha , et al. · 2020

Direct growth of transition metal dichalcogenides over large areas within the back-end-of-line (BEOL) thermal budget limit of silicon integrated circuits is a significant challenge for 3D heterogeneous integration. In this work, we report …

Effect of localized helium ion irradiation on the performance of synthetic monolayer MoS2 field-effect transistors Open

Jakub Jadwiszczak, Pierce Maguire, Conor P. Cullen, Georg S. Duesberg, Hongzhou Zhang · 2020

Helium ion irradiation is a known method of tuning the electrical conductivity and charge carrier mobility of novel two-dimensional semiconductors. Here, we report a systematic study of the electrical performance of chemically synthesized …

Synthesis of WTe2 thin films and highly-crystalline nanobelts from pre-deposited reactants Open

John B. McManus, Cansu Ilhan, Bastien Balsamo, Clive Downing, Conor P. Cullen , et al. · 2020

Tungsten ditelluride is a layered transition metal dichalcogenide (TMD) that has attracted increasing research interest in recent years. WTe2 has demonstrated large non-saturating magnetoresistance, potential for spintronic applications an…

Electronic and structural characterisation of polycrystalline platinum disulfide thin films Open

Kuanysh Zhussupbekov, Conor P. Cullen, Ainur Zhussupbekova, I. V. Shvets, Georg S. Duesberg , et al. · 2020

Semiconducting thin-film polycrystalline PtS₂ is characterised by atomically resolved scanning tunnelling microscopy and spectroscopy.

Sub-millimeter size high mobility single crystal MoSe2 monolayers synthesized by NaCl-assisted chemical vapor deposition Open

Juncheng Li, Wenjie Yan, Yanhui Lv, Jian Leng, Duan Zhang , et al. · 2020

Sub-millimeter single crystal MoSe₂ monolayers with a mobility of 38 cm² V⁻¹ s⁻¹ and responsivity of 42 mA W⁻¹ were synthesized by NaCl-assisted chemical vapor deposition.

Ontology-Guided Policy Information Extraction for Healthcare Fraud Detection Open

Theodora S. Brisimi, Vanessa López, Valentina Rho, Marco Luca Sbodio, Gabriele Picco , et al. · 2020

Financial losses in Medicaid, from Fraud, Waste and Abuse (FWA), in the United States are estimated to be in the tens of billions of dollars each year. This results in escalating costs as well as limiting the funding available to worthy re…

Investigation of growth-induced strain in monolayer MoS2 grown by chemical vapor deposition Open

Siwei Luo, Conor P. Cullen, Gencai Guo, Jianxin Zhong, Georg S. Duesberg · 2019

Effects of Annealing Temperature and Ambient on Metal/PtSe2 Contact Alloy Formation Open

Gioele Mirabelli, Lee A. Walsh, Farzan Gity, Shubhadeep Bhattacharjee, Conor P. Cullen , et al. · 2019

Forming gas annealing is a common process step used to improve the performance of devices based on transition-metal dichalcogenides (TMDs). Here, the impact of forming gas anneal is investigated for PtSe₂-based devices. A range …

Quantum confinement-induced semimetal-to-semiconductor evolution in large-area ultra-thin PtSe2 films grown at 400 °C Open

Lida Ansari, Scott Monaghan, Niall McEvoy, Cormac Ó Coileáin, Conor P. Cullen , et al. · 2019

In this work, we present a comprehensive theoretical and experimental study of quantum confinement in layered platinum diselenide (PtSe 2 ) films as a function of film thickness. Our electrical measurements, in combination with density fun…

PtSe 2 grown directly on polymer foil for use as a robust piezoresistive sensor Open

Conor S. Boland, Cormac Ó Coileáin, Stefan Wagner, John B. McManus, Conor P. Cullen , et al. · 2019

Robust strain gauges are fabricated by growing PtSe2 layers directly on top of flexible polyimide foils. These PtSe2 layers are grown by low-temperature, thermally-assisted conversion of predeposited Pt layers. Under applied flexure the Pt…

PtSe2 grown directly on polymer foil for use as a robust piezoresistive\n sensor Open

Conor S. Boland, Cormac Ó Coileáin, Stefan Wagner, John B. McManus, Conor P. Cullen , et al. · 2019

Robust strain gauges are fabricated by growing PtSe2 layers directly on top\nof flexible polyimide foils. These PtSe2 layers are grown by low-temperature,\nthermally-assisted conversion of predeposited Pt layers. Under applied flexure\nthe…

PtSe2 grown directly on polymer foil for use as a robust piezoresistive sensor Open

Conor S. Boland, Cormac Ó Coileáin, Stefan Wagner, John B. McManus, Conor P. Cullen , et al. · 2019

Robust strain gauges are fabricated by growing PtSe2 layers directly on top of flexible polyimide foils. These PtSe2 layers are grown by low-temperature, thermally-assisted conversion of predeposited Pt layers. Under applied flexure the Pt…

Photoresponsivity enhancement in monolayer MoS2 by rapid O2:Ar plasma treatment Open

Jakub Jadwiszczak, Gen Li, Conor P. Cullen, Jing Jing Wang, Pierce Maguire , et al. · 2019

We report up to ten-fold enhancement of the photoresponsivity of monolayer molybdenum disulfide (MoS2) by treatment with O2:Ar (1:3) plasma. We characterize the surface of plasma-exposed MoS2 by TEM, Raman, and PL mapping and discuss the r…

Growth of 1T′ MoTe2 by Thermally Assisted Conversion of Electrodeposited Tellurium Films Open

John B. McManus, G.W. Cunningham, Niall McEvoy, Conor P. Cullen, Farzan Gity , et al. · 2018

Molybdenum ditelluride (MoTe2) is a transition metal dichalcogenide (TMD) which has two phases stable under ambient conditions, a semiconducting (2H) and semimetallic (1T′) phase. Despite a host of interesting properties and potential appl…

Neuromorphic MoS2 memtransistors fabricated by localised helium ion beam irradiation Open

Jakub Jadwiszczak, Darragh Keane, Pierce Maguire, Conor P. Cullen, Yangbo Zhou , et al. · 2018

Two-dimensional layered semiconductors have recently emerged as attractive building blocks for next-generation low-power non-volatile memories. However, challenges remain in the controllable sub-micron fabrication of bipolar resistively sw…

Defect sizing, separation, and substrate effects in ion-irradiated monolayer two-dimensional materials Open

Pierce Maguire, Daniel Fox, Yangbo Zhou, Qianjin Wang, Maria O’Brien , et al. · 2018

Precise and scalable defect engineering of 2D nanomaterials is acutely sought-after in contemporary materials science. Here we present defect engineering in monolayer graphene and molybdenum disulfide (MoS$_2$) by irradiation with noble ga…

In Situ Formed Protective Barrier Enabled by Sulfur@Titanium Carbide (MXene) Ink for Achieving High‐Capacity, Long Lifetime Li‐S Batteries Open

Huan Tang, Wenlong Li, Limei Pan, Conor P. Cullen, Yu Liu , et al. · 2018

Sulfur (S) is an attractive cathode material with advantages including high theoretical capacity and low cost. However, issues such as the lithium polysulfide shuttle effect and its insulating properties greatly limit the future applicatio…

Oxide-mediated recovery of field-effect mobility in plasma-treated MoS 2 Open

Jakub Jadwiszczak, Colin O’Callaghan, Yangbo Zhou, Daniel Fox, Eamonn Weitz , et al. · 2018

Time-controlled plasma treatment of MoS 2 FETs improves carrier transport due to the presence of a two-dimensional oxide phase.

Rhenium-doped MoS2 films Open

Toby Hallam, Scott Monaghan, Farzan Gity, Lida Ansari, Michael Schmidt , et al. · 2017

Tailoring the electrical properties of transition metal dichalcogenides by doping is one of the biggest challenges for the application of 2D materials in future electronic devices. Here, we report on a straightforward approach to the n-typ…

Controlling Defect and Dopant Concentrations in Graphene by Remote Plasma Treatments Open

John B. McManus, Alison Hennessy, Conor P. Cullen, Toby Hallam, Niall McEvoy , et al. · 2017

This report details the controllable doping of graphene through post‐growth plasma treatments. Defects are controllably introduced into the lattice using argon plasma, following this sample are exposed to ammonia/hydrogen plasma. During th…

High-Performance Hybrid Electronic Devices from Layered PtSe2Films Grown at Low Temperature Open

Chanyoung Yim, Kangho Lee, Niall McEvoy, Maria O’Brien, Sarah Riazimehr , et al. · 2016

Layered two-dimensional (2D) materials display great potential for a range of applications, particularly in electronics. We report the large-scale synthesis of thin films of platinum diselenide (PtSe₂), a thus far scarcely inves…

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