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We are developing position sensitive silicon detectors (PSDs) which have an electrode at each of four corners so that incident position of a charged particle can be obtained with signal from the electrodes. It is expected that the position…

Instrumentation and Detectors · Physics 2020-05-28 Y. Uesugi , R. Mori , H. Yamashiro , T. Suehara , T. Yoshioka , K. Kawagoe

${\beta}$-Ga${_2}$O${_3}$ based semiconductor devices are expected to have significantly improved high-power and high-temperature performance due to its ultra-wide bandgap of close to 5 eV. However, the high-temperature operation of these…

Systems and Control · Electrical Eng. & Systems 2022-04-04 Shahadat H. Sohel , Ramchandra Kotecha , Imran S Khan , Karen N. Heinselman , Sreekant Narumanchi , M Brooks Tellekamp , Andriy Zakutayev

By reversing the Schottky barrier-height asymmetry in hot-electron semiconductor-metal-semiconductor ballistic spin filtering spin detectors, we have achieved: 1. Demonstration of >50% spin polarization in silicon, resulting from…

Materials Science · Physics 2010-12-21 Yuan Lu , Ian Appelbaum

We have measured the very low temperature (down to 30 mK) subgap resistance of Titanium Nitride (Superconductor, Tc = 4.6 K)/highly doped Silicon (Semiconductor) SIN junction (the insulating layer stands for the Schottky barrier). As the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 F. Lefloch , D. Quirion , M. Sanquer

Single photon detection is important for a wide range of low-light applications, including quantum information processing, spectroscopy, and light detection and ranging (LiDAR). A key challenge in these applications has been to integrate…

We demonstrate the formation of semimetal graphite/semiconductor Schottky barriers where the semiconductor is either silicon (Si), gallium arsenide (GaAs) or 4H-silicon carbide (4H-SiC). Near room temperature, the forward-bias diode…

Materials Science · Physics 2015-05-14 S. Tongay , T. Schumann , A. F. Hebard

The temperature of a nonneutral plasma confined in a Penning-Malmberg trap can be determined by slowly lowering one side of the trap's electrostatic axial confinement barrier; the temperature is inferred from the rate at which particles…

Instrumentation and Detectors · Physics 2020-10-26 E. D. Hunter , J. Fajans , N. A. Lewis , A. P. Povilus , C. Sierra , C. So , D. Zimmer

Carbon nanotube Schottky diodes have been fabricated in an all-photolithographic process using dissimilar contact metals on high-frequency compatible substrates (quartz and sapphire). Diodes show near-ideal behavior, and rectify currents of…

Materials Science · Physics 2009-11-13 Enrique Cobas , Michael S. Fuhrer

Deepening the understanding of interface-type Resistive Switching (RS) in metal/oxide heterojunctions is a key step for the development of high-performance memristors and Schottky rectifiers. In this study, we address the role of…

Mesoscale and Nanoscale Physics · Physics 2024-07-08 Renato Buzio , Andrea Gerbi

In this paper, a transient delayed rising and fall time of $\beta$-Ga$_2$O$_3$ NMs Schottky barrier diodes (SBDs) formed on four different substrates (diamond, Si, sapphire, and polyimide) were measured using a sub-micron second resolution…

Applied Physics · Physics 2022-07-27 Junyu Lai , Jung-Hun Seo

This letter reports the first demonstration of AlN Schottky diodes on bulk AlN substrates by metalorganic chemical vapor phase deposition (MOCVD) with breakdown voltages exceeding 3 kV. The devices exhibited good rectifying characteristics…

Applied Physics · Physics 2023-11-10 Dinusha Herath Mudiyanselage , Dawei Wang , Ziyi He , Bingcheng Da , Houqiang Fu

We analyze the properties of Fe Schottky contacts prepared in situ on n-type GaN(0001) by molecular beam epitaxy. In particular, we investigate the suitability of these epitaxial Fe layers for electrical spin injection.…

Materials Science · Physics 2024-01-31 Sergio Fernàndez-Garrido , Kai U. Ubben , Jens Herfort , Cunxu Gao , Oliver Brandt

On-chip thermometry at deep-cryogenic temperatures is vital in quantum computing applications to accurately quantify the effect of increased temperature on qubit performance. In this work, we present a sub-1 K temperature sensor in CMOS…

We have integrated a commercial avalanche photodiode (APD) and the circuitry needed to operate it as a single-photon detector (SPD) onto a single PC-board. At temperatures accessible with Peltier coolers (~200-240K), the PCB-SPD achieves…

Quantum Physics · Physics 2015-06-26 Donald S. Bethune , William P. Risk , Gary W. Pabst

Vertical diamond Schottky diodes with blocking voltages $V_{\text{BD}} > 2.4 \text{ kV}$ and on-resistances $R_{\text{On}} < 400 \text{ m}\Omega \text{cm}^{2}$ were fabricated on homoepitaxially grown diamond layers with different surface…

Recently demonstrated metal-semiconductor heterojunctions with few-atom thickness show their promise as 2D Schottky contacts for future integrated circuits and nanoelectronics. The theory for 3D Schottky contacts, however, fails on these…

Applied Physics · Physics 2017-04-26 Fangbo Xu , Alex Kutana , Yang Yang , Boris I. Yakobson

Symmetry plays a critical role in determining various properties of a material. Semiconducting p-n junction diode exemplifies the engineered skew electronic response and is at the heart of contemporary electronic circuits. The…

Strip and pixels sensors, fabricated on high resistivity silicon substrate, normally of p-type, are used in detectors for High Energy Physics (HEP) typically in a hybrid detector assembly. Furthermore, and owing to their inherent advantages…

A method is proposed for determining the electric field in highly-irradiated silicon pad diodes using admittance-frequency (Y-f ), and current measurements (I). The method is applied to Y-f and I data from square n+p diodes of 25mm2 area…

Instrumentation and Detectors · Physics 2022-03-02 R. Klanner , J. Schwandt

In this paper, we investigate the electrical evolution of tungsten (W) and tungsten carbide (WC) Schottky contacts on 4H-SiC subjected to thermal treatments at different annealing temperatures from 475 to 700 {\deg} C. For each annealing…