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Schottky barrier inhomogeneities are expected at the metal/TMDC interface and this can impact device performance. However, it is difficult to account for the distribution of interface inhomogeneity as most techniques average over the…

Mesoscale and Nanoscale Physics · Physics 2020-12-15 Calvin Pei Yu Wong , Cedric Troadec , Andrew T. S. Wee , Kuan Eng Johnson Goh

The forward and reverse current-voltage characteristics of the Mo/n-Si Schottky barrier structures have been studied experimentally in the temperature range 130-330 K. It is found that Shottky barrier height increases and time ideality…

Materials Science · Physics 2013-02-26 Oleg Olikh

In this paper, the electrical behavior of tungsten carbide (WC) Schottky barrier on 4H-SiC was investigated. First, a statistical current-voltage (I-V) analysis in forward bias, performed on a set of equivalent diodes, showed a symmetric…

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…

Mesoscale and Nanoscale Physics · Physics 2017-02-08 Subir Parui , Ainhoa Atxabal , Mário Ribeiro , Amilcar Bedoya-Pinto , Xiangnan Sun , Roger Llopis , Fèlix Casanova , Luis E. Hueso

Schottky barriers are often formed at the semiconductor/metal contacts and affect the electrical behaviour of semiconductor devices. In particular, Schottky barriers have been playing a major role in the investigation of the electrical…

Applied Physics · Physics 2021-10-18 Alessandro Grillo , Antonio Di Bartolomeo

In this work we study the Schottky barrier height (SBH) at the junction between $\beta$-Ga$_2$O$_3$ and platinum, a system of great importance for the next generation of high-power and high-temperature electronic devices. Specifically, we…

Materials Science · Physics 2022-01-06 Félix Therrien , Andriy Zakutayev , Vladan Stevanović

An aluminum nitride (AlN) Schottky barrier diode (SBD) was fabricated on a nonpolar AlN crystal grown on tungsten substrate by physical vapor transport. The Ni/Au-AlN SBD features a low ideality factor n of 3.3 and an effective Schottky…

Realizing an optimal Schottky interface of graphene on Si is challenging, as the electrical transport strongly depends on the graphene quality and the fabrication processes. Such interfaces are of increasing research interest for…

Mesoscale and Nanoscale Physics · Physics 2017-02-08 S. Parui , R. Ruiter , P. J. Zomer , M. Wojtaszek , B. J. van Wees , T. Banerjee

The Schottky barrier height (SBH) is mapped with nanoscale resolution at pure Au/Si(001) and mixed Au/Ag/Si(001) interfaces utilizing ballistic electron emission microscopy (BEEM) by acquiring and fitting spectra every 11.7 nm over a 1…

Mesoscale and Nanoscale Physics · Physics 2014-11-04 Robert Balsano , Chris Durcan , Akitomo Matsubayashi , Vincent P. LaBella

In order to develop a method to extract the parameters of the two inherent Schottky contacts from a single current-voltage (I-V) characteristic curve, the I-V characteristics of metal-semiconductor-metal (MSM) diodes with asymmetric…

Materials Science · Physics 2014-11-17 Ryo Nouchi

In this work, we describe the charge transport in two-dimensional (2D) Schottky barrier field-effect transistors (SB-FETs) based on the carrier injection at the Schottky contacts. We first develop a numerical model for thermionic and…

Applied Physics · Physics 2023-07-12 Ashwin Tunga , Zijing Zhao , Ankit Shukla , Wenjuan Zhu , Shaloo Rakheja

The low temperature electrical behavior of adjacent silicide/Si Schottky contacts with or without dopant segregation is investigated. The electrical characteristics are very well modeled by thermionic-field emission for non-segregated…

We present first-principles calculations of Schottky barrier heights (SBHs) at interfaces relevant for silicon-based merged-element transmon qubit devices. Focusing on Al(111)/Si(111) and CoSi$_2$(111)/Si(111), we consider various possible…

Materials Science · Physics 2024-07-12 J. K. Nangoi , C. J. Palmstrøm , C. G. Van de Walle

Cryogenic low noise amplifiers based on high electron mobility transistors (HEMTs) are widely used in applications such as radio astronomy, deep space communications, and quantum computing, and the physical mechanisms governing the…

Mesoscale and Nanoscale Physics · Physics 2021-11-03 Alexander Y. Choi , Iretomiwa Esho , Bekari Gabritchidze , Jacob Kooi , Austin J. Minnich

Internal photoemission spectroscopy was used to determine the Schottky barrier height in rectifying SrRuO3/Nb-doped SrTiO3 junctions for 0.01 wt % and 0.5 wt % Nb concentrations. Good agreement was obtained with the barrier height deduced…

Strongly Correlated Electrons · Physics 2009-11-13 Y. Hikita , Y. Kozuka , T. Susaki , H. Takagi , H. Y. Hwang

Accurate prediction of Schottky barrier heights (SBHs) at metal-semiconductor (M-SC) interfaces is essential for understanding and optimizing charge injection in electronic and optoelectronic devices. However, first-principles calculations…

Materials Science · Physics 2026-03-10 Viviana Dovale-Farelo , Kamal Choudhary

The newly emerging class of atomically-thin materials has shown a high potential for the realisation of novel electronic and optoelectronic components. Amongst this family, semiconducting transition metal dichalcogenides (TMDCs) are of…

Mesoscale and Nanoscale Physics · Physics 2018-03-13 Nicola J. Townsend , Iddo Amit , Monica F. Craciun , Saverio Russo

The Schottky barrier of a metal-semiconductor junction is one of the key quantities affecting the charge transport in a transistor. The Schottky barrier height depends on several factors, such as work function difference, local atomic…

Mesoscale and Nanoscale Physics · Physics 2020-12-09 Line Jelver , Daniele Stradi , Kurt Stokbro , Karsten Wedel Jacobsen

Due to Fermi level pinning (FLP), metal-semiconductor contact interfaces result in a Schottky barrier height (SBH), which is usually difficult to tune. This makes it challenging to efficiently inject both electrons and holes using the same…

Mesoscale and Nanoscale Physics · Physics 2021-02-15 Krishna Murali , Medha Dandu , Kenji Watanabe , Takashi Taniguchi , Kausik Majumdar

Ga2O3 Schottky barrier diodes featuring a field plate and a composite SiO2/SiNx dielectric layer beneath the field plate were fabricated, achieving a breakdown voltage of 2.4 kV at room temperature. Electrical performance and degradation…

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