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Nickel silicide Schottky diodes formed on polycrystalline Si<P> films are proposed as temperature sensors of monolithic uncooled microbolometer IR focal plane arrays. Structure and composition of nickel silicide/polycrystalline silicon…

The scalable synthesis of two-dimensional (2D) hexagonal boron nitride (h-BN) is of great interest for its numerous applications in novel electronic devices. Highly-crystalline h-BN films, with single-crystal sizes up to hundreds of…

Principal characteristics of interlayer interaction and relative motion of hexagonal boron nitride (h-BN) layers are investigated by the first-principles method taking into account van der Waals interactions. Dependences of the interlayer…

介观与纳米尺度物理 · 物理学 2016-04-13 Alexander V. Lebedev , Irina V. Lebedeva , Andrey A. Knizhnik , Andrey M. Popov

Using molecular dynamics simulations and the ReaxFF force field, we studied a composite based on cubic (c-BN) and hexagonal (h-BN) boron nitride subjected to different temperatures to verify the possibility of a c-BN to h-BN phase…

材料科学 · 物理学 2024-11-25 Pedro A. Parra , Eliezer F. Oliveira

Ballistic electron emission microscopy (BEEM) was performed to obtain nanoscale current versus bias characteristics of non-epitaxial Au on p-type GaAs in order to accurately measure the local Schottky barrier height. Hole injection BEEM…

介观与纳米尺度物理 · 物理学 2015-02-04 I. Sitnitsky , J. J. Garramone , J. R. Abel , P. Xu , S. D. Barber , M. L. Ackerman , J. K. Schoelz , P. M. Thibado , V. P. LaBella

For electronic and photoelectronic devices based on GeSe, an emergent two dimensional monochalcogenide with many exciting properties predicted, good electrical contacts are of great importance for achieving high device performances and…

介观与纳米尺度物理 · 物理学 2019-01-11 Ranran Li , Wei Xia , Yanfeng Guo , Jiamin Xue

We examine the effect of a hexagonal boron nitride (hBN) substrate on electron transport through graphene nanojunctions just before gap formation. Junctions in vacuum and on hBN are formed using classical molecular dynamics to create…

介观与纳米尺度物理 · 物理学 2016-06-29 Hatef Sadeghi , Sara Sangtarash , Colin Lambert

We show the operation of a Cu/Al_2O_3/Cu/n-Si hot-electron transistor for the straightforward determination of a metal/semiconductor energy barrier height even at temperatures below carrier-freeze out in the semiconductor. The hot-electron…

介观与纳米尺度物理 · 物理学 2017-02-08 Subir Parui , Ainhoa Atxabal , Mário Ribeiro , Amilcar Bedoya-Pinto , Xiangnan Sun , Roger Llopis , Fèlix Casanova , Luis E. Hueso

The electronic band structure in the epitaxial Fe/MgO/GaAs(001) tunnel junction has been studied by X-ray and ultraviolet photoelectron spectroscopy measurements. The Schottky barrier height (SBH) of Fe on MgO/GaAs heterostructure is…

材料科学 · 物理学 2020-04-08 Y. Lu , J. C. Le Breton , P. Turban , B. Lépine , P. Schieffer , G. Jézéquel

We performed a comprehensive scaling study of Schottky barrier carbon nanotube transistors using self-consistent, atomistic scale simulations. We restrict our attention to Schottky barrier carbon nanotube FETs whose metal source/drain is…

介观与纳米尺度物理 · 物理学 2009-11-10 Jing Guo , Supriyo Datta , Mark Lundstrom

An inherent difficulty in studying mesoscopic effects in semiconductor--superconductor hybrid structures is the large Schottky barrier which often forms at the interface. A large technological effort has been invested in in improving the…

介观与纳米尺度物理 · 物理学 2007-05-23 Niels Asger Mortensen , Antti-Pekka Jauho , Karsten Flensberg

Graphite and hexagonal boron nitride (h-BN) are two prominent members of the family of layered materials possessing a hexagonal lattice. While graphite has non-polar homo-nuclear C-C intra-layer bonds, h-BN presents highly polar B-N bonds…

材料科学 · 物理学 2012-04-16 Oded Hod

Fission-related phenomena of heavy $\Lambda$ hypernuclei are discussed with the constraint Skyrme-Hartree-Fock+BCS (SHF+BCS) method, in which a similar Skyrme-type interaction is employed also for the interaction between a $\Lambda$…

核理论 · 物理学 2009-11-25 F. Minato , S. Chiba , K. Hagino

The thermal conductivity of suspended few-layer hexagonal boron nitride (h-BN) was measured using a micro-bridge device with built-in resistance thermometers. Based on the measured thermal resistance values of 11-12 atomic layer h-BN…

In the wide world of 2D materials, hexagonal boron nitride (hBN) holds a special place due to its excellent characteristics. In addition to its thermal, chemical and mechanical stability, hBN demonstrates high thermal conductivity, low…

Ab-initio calculations have been used to study the influence of the interface morphology and, notably, of the exchange reaction on the electronic properties of Al/GaN (100) interfaces. In particular, the effects of interface structure (i.e.…

材料科学 · 物理学 2009-10-31 S. Picozzi , A. Continenza , S. Massidda , A. J. Freeman , N. Newman

High contact resistances have blocked the progress of devices based on MX2 (M = Mo,W; X = S,Se,Te) 2D semiconductors. Interface states formed at MX2/metal contacts pin the Fermi level, leading to sizable Schottky barriers for p-type…

介观与纳米尺度物理 · 物理学 2016-02-09 M. Farmanbar , G. Brocks

In this paper we present studies of the I-V characteristics of CdZnTe detectors with Pt contacts fabricated from high-resistivity single crystals grown by the high-pressure Brigman process. We have analyzed the experimental I-V curves using…

We report a numerical study of the tunnel conductance through the Schottky barrier at the contact between a semiconducting carbon nanotube and a metal electrode. In a planar gate model the asymmetry between the p--doped and the n--doped…

介观与纳米尺度物理 · 物理学 2009-09-10 Takeshi Nakanishi , Adrian Bachtold , Cees Dekker

Using combination of Density Functional Theory and Monte Carlo simulation, we study the phase stability and electronic properties of two dimensional hexagonal composites of boron nitride and graphene, with a goal to uncover the role of the…

材料科学 · 物理学 2017-07-11 Ransell D'Souza , Sugata Mukherjee , Tanusri Saha-Dasgupta