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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

${\beta}$-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

Schottky barrier contact has been fabricated by thermal deposition of Al on (100) Ge (impurity concentration~1010/cm3 at 80K) that shows extrinsic p-type to intrinsic n-type transition near 180K. Both p and n-type Ge exhibits ideal Schottky…

Materials Science · Physics 2020-11-30 Shreyas Pitale , Manoranjan Ghosh , S. G. Singh , Husain Manasawala , G. D. Patra , Shashwati Sen

This article introduces a thin-film thermocouple temperature sensor with symmetrical electrode structure. It uses PI film as a flexible substrate. Cu film and CuNi film made by MEMS manufacturing process as positive and negative electrodes.…

Materials Science · Physics 2021-11-12 Yulong Bao , Bin Xu , Huang Wang , Dandan Yuan , Xiaoxiao Yan , Haoxin Shu , Gang Tang

In this paper, we report an alternative approach of implementing a Schottky collector bipolar transistor without doping the ultrathin SOI film. Using different metal work function electrodes, the electrons and holes are induced in an…

Mesoscale and Nanoscale Physics · Physics 2013-08-21 Kanika Nadda , M. Jagadesh Kumar

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

We demonstrate electrical injection and detection of spin-polarized electrons in silicon (Si) using epitaxially grown Fe_3Si/Si Schottky-tunnel-barrier contacts. By an insertion of a delta-doped n^+-Si layer (~ 10^19 cm^-3) near the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Y. Ando , K. Hamaya , K. Kasahara , Y. Kishi , K. Ueda , K. Sawano , T. Sadoh , M. Miyao

A systematic investigation of the electrical characteristics of \b{eta}-Ga2O3 Schottky barrier diodes (SBDs) has been conducted under high-dose 60Co gamma radiation, with total cumulative doses reaching up to 5 Mrad (Si). Initial exposure…

Applied Physics · Physics 2025-10-21 Saleh Ahmed Khan , Sudipto Saha , Uttam Singisetti , A F M Anhar Uddin Bhuiyan

This letter reports the demonstration of lateral AlN Schottky barrier diodes (SBDs) on single-crystal AlN substrates by metalorganic chemical vapor deposition (MOCVD) with an ultra-low ideality factor ({\eta}) of 1.65, a breakdown voltage…

Applied Physics · Physics 2024-06-25 Dinusha Herath Mudiyanselage , Dawei Wang , Ziyi He , Bingcheng Da , Houqiang Fu

We have studied the optical properties of two-dimensional (2D) Schottky photodiode heterojunctions made of chemical vapor deposited (CVD) graphene on n- and p-type Silicon (Si) substrates. Much better rectification behavior is observed from…

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…

In the last two decades we have assisted to a rush towards finding a He3-replacing technology capable of detecting neutrons emitted from fissile isotopes. The demand stems from applications like nuclear war-head screening or preventing…

We have developed a silicon nitride based photonic integrated circuit (PIC) that is responsible for the cooling, pumping and imaging of cold rubidium 87 atoms. The photonic integrated circuit consists of two chips placed next to each other…

Single-event burnout and single-event leakage current (SELC) in SiC power devices induced by heavy ions severely limit their space application, and the underlying mechanism is still unclear. One fundamental problem is lack of…

Materials Science · Physics 2024-07-24 Xiaoyu Yan , Pengfei Zhai , Chen Yang , Shiwei Zhao , Shuai Nan , Peipei Hu , Teng Zhang , Qiyu Chen , Lijun Xu , Zongzhen Li , Jie Liu

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

Graphene-silicon (GS) Schottky junctions have been demonstrated as an efficient architecture for photodetection. However, the response speed of such devices for free space light detection has so far been limited to 10's-100's of kHz for…

Applied Physics · Physics 2020-01-09 H. Selvi , E. W. Hill , P. Parkinson , T. J. Echtermeyer

Heterostructures of two-dimensional (2D) and three-dimensional (3D) materials form efficient devices for utilizing the properties of both classes of materials. Graphene/silicon (G/Si) Schottky diodes have been studied extensively with…

Applied Physics · Physics 2020-02-26 Sarah Riazimehr , Melkamu Belete , Satender Kataria , Olof Engström , Max Christian Lemme

We measured the low temperature subgap resistance of titanium nitride (superconductor, Tc=4.6K)/highly doped silicon (degenerated semiconductor) SIN junctions, where I stands for the Schottky barrier. At low energies, the subgap conductance…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 D. Quirion , F. Lefloch , M. Sanquer

Silicon Photomultipliers (SiPM) represent a promising alternative to classical photomultipliers, for instance, for the detection of photons in high energy physics and medical physics. In the present work, electrical characterizations of…

Instrumentation and Detectors · Physics 2017-08-23 M. J. Boschini , C. Consolandi , P. G. Fallica , M. Gervasi , D. Grandi , M. Mazzillo , S. Pensotti , P. G. Rancoita , D. Sanfilippo , M. Tacconi , G. Valvo

We demonstrate the thermo-optic properties of silicon-rich silicon nitride (SRN) films deposited using plasma-enhanced chemical vapor deposition (PECVD). Shifts in the spectral response of Mach-Zehnder Interferometers (MZIs) as a function…

Applied Physics · Physics 2023-07-19 Hani Nejadriahi , Alex Friedman , Rajat Sharma , Steve Pappert , Yeshaiahu Fainman , Paul Yu