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Density functional theory calculations are used to systematically investigate the structural and electronic properties of MX$_2$ transition metal dichalcogenide monolayers with M = Cr, Mo, W and X = S, Se, Te that are doped with single (V,…

Materials Science · Physics 2024-01-03 Yuqiang Gao , Paul J. Kelly

The exceptional electronic, optical and chemical properties of two-dimensional materials strongly depend on the 3D atomic structure and crystal defects. Using Re-doped MoS2 as a model, here we develop scanning atomic electron tomography…

Adsorbed atoms and molecules play an important role in controlling and tuning the functional properties of two-dimensional (2D) materials. Understanding and predicting this process from theory is challenging because of the need to capture…

Mesoscale and Nanoscale Physics · Physics 2017-07-12 Fabiano Corsetti , Arash A. Mostofi , Johannes Lischner

Doping impurity atoms is a strategy commonly used to tune the functionality of materials including catalysts, semiconductors, and quantum emitters. The location of dopants and their interaction with surrounding atoms could significantly…

Molecular self-assembly is a well-known technique to create highly functional nanostructures on surfaces. Self-assembly on two-dimensional materials is a developing field and has already resulted in the discovery of several rich and…

Mesoscale and Nanoscale Physics · Physics 2017-09-04 Avijit Kumar , Kaustuv Banerjee , Peter Liljeroth

Doping of Si using the scanning probe hydrogen depassivation lithography technique has been shown to enable placing and positioning small numbers of P atoms with nanometer accuracy. Several groups have now used this capability to build…

Random sequential adsorption algorithm is a popular tool for modelling structure of monolayers built in irreversible adsorption experiments. However, this algorithm becomes very inefficient when the density of molecules in a layer rises.…

Computational Physics · Physics 2019-11-25 Michał Cieśla

Two-dimensional (2d) nano-electronics, plasmonics, and emergent phases require clean and local charge control, calling for layered, crystalline acceptors or donors. Our Raman, photovoltage, and electrical conductance measurements combined…

Sliding of two-dimensional materials is critical for their application as solid lubricants for space, and also relevant for strain engineering and device fabrication. Dopants such as Ni surprisingly improve lubrication in MoS$_2$, despite…

Materials Science · Physics 2022-10-03 Enrique Guerrero , David A. Strubbe

Density functional theory is used to systematically study the electronic and magnetic properties of doped MoS$_2$ monolayers, where the dopants are incorporated both via S/Mo substitution or as adsorbates. Among the possible substitutional…

Materials Science · Physics 2013-08-21 Kapildeb Dolui , Ivan Rungger , Chaitanya Das Pemmaraju , Stefano Sanvito

Two-dimensional (2D) materials have received considerable attention as possible electrodes in Li-ion batteries (LIBs), although a deeper understanding of the Li adsorption behavior as well as broad screening of the materials space is still…

Materials Science · Physics 2022-03-22 Sheng Gong , Shuo Wang , Taishan Zhu , Xi Chen , Jeffrey C. Grossman

Solvents are an essential element in the production and processing of two-dimensional (2D) materials. For example, the liquid phase exfoliation of layered materials requires a solvent to prevent the resulting monolayers from re-aggregating,…

Materials Science · Physics 2018-09-10 Urvesh Patil , Nuala M. Caffrey

Two-dimensional (2D) $\beta$-TeO$_2$ has gained attention as a promising material for optoelectronic and power device applications, thanks to its transparency and high hole mobility. However, the underlying mechanism behind its $p$-type…

Mesoscale and Nanoscale Physics · Physics 2025-01-08 Rafael Costa-Amaral , Soungmin Bae , Vu Thi Ngoc Huyen , Yu Kumagai

Dispersed impurities in diamond present a flourishing platform for research in quantum informatics, spintronics and single phonon emitters. Based on the vast pool of experimental and theoretical work describing impurity atoms in diamond, we…

Materials Science · Physics 2023-08-31 D. Propst , J. Kotakoski , E. H. Åhlgren

Two-dimensional polyaniline with a C3N stoichiometry, is a newly fabricated material that has expected to possess fascinating electronic, thermal, mechanical and chemical properties . The possibility of further tuning the C3N properties…

Computational Physics · Physics 2017-08-18 Meysam Makaremi , Bohayra Mortazavi , Chandra Veer Singh

Direct comparison of scanning tunneling microscopy and high resolution core level photo-emission experiments provides a rationale for the mechanism of formation of a two dimensional (2D) binary alloy (1/3 mono-layer (ML) Sn(1-…

Materials Science · Physics 2007-05-23 L. Ottaviano , G. Profeta , L. Petaccia , C. Nacci , S. Santucci , A. Pesci , M. Pedio

Modifying the optoelectronic properties of nanostructured materials through introduction of dopant atoms has attracted intense interest. Nevertheless, the approaches employed are often trial and error, preventing rational design. We…

Materials Science · Physics 2021-07-13 Michael G. Taylor , Heather J. Kulik

Intermetallic compounds such as {A$_{2}$B$_{7}$} alloys are promising candidates for mobile hydrogen storage applications due to their high and reversible hydrogen absorption capacity. We compute the absorption isotherm of…

Donor-modified TiO 2 nanoparticles are interesting hybrid systems shifting the absorption edge of this semiconductor from the ultra-violet to the visible or infrared light spectrum, which is a benefit for several applications ranging from…

Materials Science · Physics 2020-12-08 Costanza Ronchi , Federico Soria , Lorenzo Ferraro , Silvana Botti , Cristiana Di Valentin

Two-dimensional (2D) semiconductors are likely to dominate next-generation electronics due to their advantages in compactness and low power consumption. However, challenges such as high contact resistance and inefficient doping hinder their…

Materials Science · Physics 2024-10-11 Raagya Arora , Ariel R. Barr , Daniel T. Larson , Michele Pizzochero , Efthimios Kaxiras
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