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With the best overall electronic and thermal properties, single crystal diamond (SCD) is the extreme wide bandgap material that is expected to revolutionize power electronics and radio-frequency electronics in the future. However, turning…

Two dimensional (2D) transition-metal dichalcogenide (TMD) based semiconductors have generated intense recent interest due to their novel optical and electronic properties, and potential for applications. In this work, we characterize the…

Two-dimensional (2D) materials and Transition Metal Dichalcogenides (TMD) in particular are at the forefront of nanotechnology. To tailor properties for engineering applications, alloying strategies used for bulk metals in the last century…

Materials Science · Physics 2022-12-14 Andrea Silva , Jiangming Cao , Tomas Polcar , Denis Kramer

Earth-abundant two-dimensional (2D) pristine transition metal dichalcogenides (TMDs) have emerged as a superlative class of materials for several applications in electronic devices, energy storage devices, gas sensing, etc., and they have…

Materials Science · Physics 2021-06-29 Joy Ekka , Shrish Nath Upadhyay , Verma Bunty Sardar , Srimanta Pakhira

Two-dimensional (2D) transition metal dichalcogenide (TMD) materials have versatile electronic and optical properties. TMD nanoribbons show interesting properties due to reduced dimensionality, quantum confinement, and edge states. Tang et…

Materials Science · Physics 2023-06-16 Santosh Neupane , Hong Tang , Adrienn Ruzsinszky

The weak van der Waals interlayer interactions in the transition metal dichalcogenide (TMD) materials have created a rich platform to study their exotic electronic properties through chemical doping or physical gating techniques. We…

Superconductivity · Physics 2019-03-20 Hanlin Wu , Sheng Li , Michael Susner , Sunah Kwon , Moon Kim , Timothy Haugan , Bing Lv

Study and comparison of over 30 examples of electron doped BaFe2As2 for transition metal (TM) = Co, Ni, Cu, and (Co/Cu mixtures) have lead to an understanding that the suppression of the structural/antiferromagnetic phase transition to low…

Superconductivity · Physics 2009-08-04 P. C. Canfield , S. L. Bud'ko , N. Ni , J. Q. Yan , A. Kracher

Mirror twin boundary (MTB) brings unique 1D physics and properties into two-dimensional transition metal dichalcogenides (TMDCs), but they were rarely observed in non-Mo-based TMDCs. Herein, by post-growth Nb doping, high density 4|4E-W and…

Materials Science · Physics 2020-01-16 Bo Wang , Yipu Xia , Junqiu Zhang , Hannu-Pekka Komsa , Maohai Xie , Yong Peng , Chuanhong Jin

We report on the ab-plane reflectance of the high temperature superconductor Bi2Sr2CaCu2O8+d (Bi-2212). Samples spanning the doping range from under doped with Tc = 67 K(UD), to optimally doped with Tc = 96 K (OPT), to over doped with Tc =…

Superconductivity · Physics 2015-06-25 J. Hwang , T. Timusk , G. D. Gu

We present a first--principles density functional theory (DFT) study of transition metal (TM = Ti, Cr, Mn, Fe, Co, Ni) functionalized two--dimensional polyaramid (2DPA) to explore their structural, electronic, and magnetic properties.…

Materials Science · Physics 2025-11-03 Ravi Trivedi , Chaithanya Purushottam Bhat , Shakti S. Ray , Debashis Bandyopadhyay

There has been extensive activity exploring the doping of semiconducting two-dimensional (2D) transition metal dichalcogenides in order to tune their electronic and magnetic properties. The outcome of doping depends on various factors,…

In reduced-dimensional semiconductors, doping-induced carrier plasmons can strongly couple with quasiparticle excitations, leading to a significant band gap renormalization. We develop a new plasmon-pole theory that efficiently and…

Mesoscale and Nanoscale Physics · Physics 2015-02-11 Yufeng Liang , Li Yang

Unlike Si, 2-dimensional (2D) Transition Metal Dichalcogenides (TMDs) offer atomically thin channels for carrier transport in FETs. Despite advantages like superior gate control, steep sub-threshold swing and high carrier mobility offered…

Applied Physics · Physics 2019-01-09 Ansh , Jeevesh Kumar , Ravi K Mishra , Srinivasan Raghavan , Mayank Shrivastava

Properties of layered superconductors can vary drastically when thinned down from bulk to monolayer, owing to the reduced dimensionality and weakened interlayer coupling. In transition metal dichalcogenides (TMDs), the inherent symmetry…

A novel design-friendly device called the transistor-injected dual doping quantum cascade laser (TI-D2QCL) with two different doping in each stack of a homogeneous superlattice is proposed. By adjusting the base-emitter bias Vbe of the…

Optics · Physics 2021-07-07 Zhiyuan Lin , Zhuoran Wang , Guohui Yuan , Jean-Pierre Leburton

Transition metal dichalcogenides (TMDs) are emerging as promising two-dimensional (2d) semiconductors for optoelectronic and flexible devices. However, a microscopic explanation of their photophysics -- of pivotal importance for the…

Bandgap control is of central importance for semiconductor technologies. The traditional means of control is to dope the lattice chemically, electrically or optically with charge carriers. Here, we demonstrate for the first time a widely…

Two-dimensional semiconductors, known as Transition Metal Dichalcogenides (TMDCs), are of great interest among many materials due to their unique 2D characteristics, including exceptional electronic and optical properties. These compounds…

Materials Science · Physics 2023-10-23 Khawla Jaffel

Doping plays a key role in functionalizing semiconductor devices, yet traditional chemical approaches relying on foreign-atom incorporation suffer from doping-asymmetry, pronounced lattice disorder and constrained spatial resolution. Here,…

Materials Science · Physics 2025-05-12 Bo Zhang , Hui Xia , Zhengdong Huang , Yaqian Liu , Jun Kang , Liaoxin Sun , Tianxin Li , Su-Huai Wei , Wei Lu

Tailoring the optical properties and electronic doping in transition metal dichalcogenides (TMDs) is a central strategy for developing innovative systems with tunable characteristics. In this context, pyroelectric materials, which hold the…