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Computational methods are fast becoming an integral part of nanoelectronics design process. With increasing computational power, electron transport simulation methods such as Non-equilibrium Greens function (NEGF) methods now hold promise…

Materials Science · Physics 2021-09-28 A. Ramazani , F. Shayeganfar , V. Sundararaghavan , Nicholas Xuanlai Fang

Efficient heat dissipation to the substrate is crucial for optimal device performance in nanoelectronics. We develop a theory of electronic thermal boundary conductance (TBC) mediated by remote phonon scattering for the single-layer…

Mesoscale and Nanoscale Physics · Physics 2020-09-28 Zhun-Yong Ong , Gang Zhang , Linyou Cao , Yong-Wei Zhang

A novel methodology, named the diffusion profile method, is proposed in this research to measure the electric field of a low gain avalanche detector (LGAD).The proposed methodology utilizes the maximum of the time derivative of the edge…

Instrumentation and Detectors · Physics 2023-11-30 Chenxi Fu , Haobo Wang , Tao Yang , Zijun Xu , Congcong Wang , Jianing Lin , Weimin Song , Ryuta Kiuchi , Xiaoshen Kang , Xin Shi , Suyu Xiao

Thickness engineered tunneling field-effect transistors (TE-TFET) as a high performance ultra-scaled steep transistor is proposed. This device exploits a specific property of 2D materials: layer thickness dependent energy bandgap (Eg).…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Fan W. Chen , Hesameddin Ilatikhameneh , Tarek A. Ameen , Gerhard Klimeck , Rajib Rahman

Quantum correlation and hot-carrier transport represent two fundamentally distinct regimes of electronic conduction, rarely accessible within the same device. Here, we report a state-of-the-art monolayer transition metal dichalcogenides…

Mesoscale and Nanoscale Physics · Physics 2025-11-11 Debottam Daw , Houcine Bouzid , Sung-Gyu Lee , Wujoon Cha , Ki Kang Kim , Min-kyu Joo , Yan Wang , Manish Chhowalla , Young Hee Lee

A charge transfer (CT) model is introduced for strong acceptors like A = F4TCNQ that are ionized on surfaces at low coverage {\theta}. Each A forms a CT dimer with a surface state S. Dipole-dipole repulsion grows as {\theta}^(3/2) up to…

Materials Science · Physics 2011-06-28 Zoltán G. Soos , Benjamin J. Topham

We report field-effect transistors (FETs) with single-crystal molybdenum disulfide (MoS2) channels synthesized by chemical vapor deposition (CVD). For a bilayer MoS2 FET, the mobility is ~17 cm2V-1s-1 and the on/off current ratio is ~108,…

Materials Science · Physics 2015-06-15 Wei Wu , Debtanu De , Su-Chi Chang , Yanan Wang , Haibing Peng , Jiming Bao , Shin-Shem Pei

Transition-metal dichalcogenides (TMDCs) are important class of two-dimensional (2D) layered materials for electronic and optoelectronic applications, due to their ultimate body thickness, sizable and tunable bandgap, and decent theoretical…

Materials Science · Physics 2017-01-10 Zhihao Yu , Zhun-Yong Ong , Songlin Li , Jian-Bin Xu , Gang Zhang , Yong-Wei Zhang , Yi Shi , Xinran Wang

The primary mechanism of operation of almost all transistors today relies on electric-field effect in a semiconducting channel to tune its conductivity from the conducting 'on'-state to a non-conducting 'off'-state. As transistors continue…

Two-dimensional (2D) materials are highly promising for tunnel field effect transistors (TFETs) with low subthreshold swing and high drive current because the shorter tunnel distance and strong gate controllability can be expected from the…

The two-dimensional transition metal dichalcogenides (TMDs) have been proposed as candidates for the channel material in future field effect transistor designs. The heterophase design which utilizes the metallic T- or T' phase of the TMD as…

Mesoscale and Nanoscale Physics · Physics 2021-08-04 Line Jelver , Ole Hansen , Karsten Wedel Jacobsen

We present a scaling theory of two-dimensional (2D) field effect transistors (FETs). For devices with channel thickness less than 4 nm, the device electrostatics is dominated by the physical gate oxide thickness and not the effective oxide…

Mesoscale and Nanoscale Physics · Physics 2021-05-25 Saurabh V. Suryavanshi , Chris D. English , H. -S. P. Wong , Eric Pop

Low-dimensional (LD) transition metal dichalcogenides (TMDs) in the form of nanoflakes, which consist of one or several layers, are the subject of intensive fundamental and applied research. Due to the size-induced transition from a bulk to…

For the growth of emerging graphene field-effect transistor (GFET) technologies, a thorough characterization of on-wafer variability is required. Here, we report for the first time a physics-based compact model, which precisely describes…

Mesoscale and Nanoscale Physics · Physics 2025-06-05 N. Mavredakis , A. Pacheco-Sanchez , R. Garcia Cortadella , Anton-Guimerà-Brunet , J. A. Garrido , D. Jiménez

We report on an unconventional $macroscopic$ field effect transistor composed of electrons floating above the surface of superfluid helium. With this device unique transport regimes are realized in which the charge density of the electron…

Mesoscale and Nanoscale Physics · Physics 2018-10-26 K. Nasyedkin , H. Byeon , L. Zhang , N. R. Beysengulov , J. Milem , S. Hemmerle , R. Loloee , J. Pollanen

Transition metal dichalcogenides (TMDs) display a rich variety of instabilities such as spin and charge orders, Ising superconductivity and topological properties. Their physical properties can be controlled by doping in electric…

Transition metal dichalcogenides (TMDs) are a branch of two-dimensional materials which in addition to having an easy-to-exfoliate layered structure, also host semiconducting, metallic, superconducting, and topological properties in various…

Superconductivity · Physics 2023-01-25 Suvodeep Paul , Saswata Talukdar , Ravi Shankar Singh , Surajit Saha

Atomically thin semiconductors have versatile future applications in the information and communication technologies for the ultimate miniaturization of electronic components. In particular, the ongoing research demands not only a…

In bilayers of two-dimensional (2D) semiconductors with stacking arrangements which lack inversion symmetry charge transfer between the layers due to layer-asymmetric interband hybridisation can generate a potential difference between the…

Mesoscale and Nanoscale Physics · Physics 2021-07-01 F. Ferreira , V. V. Enaldiev , V. I. Fal'ko , S. J. Magorrian

Transition metal dichalcogenides (TMDs) are optically active layered materials providing potential for fast optoelectronics and on-chip photonics. We demonstrate electrically driven single-photon emission from localised sites in tungsten…