Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Tony Witt"'
Publikováno v:
IRPS
In this work, we studied the behavior of gate oxide (GOx) breakdown of 1200V 4H-SiC DMOSFETs by a screening process of voltage ramp (vramp). By employing vramp between 40-50V on a 50nm GOx, early failures below 50V, which could be infant or extrinsic
Publikováno v:
IRPS
SiC devices operate at 8x higher electric fields than Silicon devices, which subjects the passivation layers of SiC devices to these higher electric fields during voltage blocking states. We report a novel bimodal transient variation of reversebiased
Publikováno v:
Materials Science Forum. 924:621-624
Silicon Carbide JBS diodes are capable, in forward bias, of carrying surge current of magnitude significantly higher than their rated current, for short periods. In this work, we examine the mechanisms of device failure due to excess surge current by
Publikováno v:
Materials Science Forum. 858:177-180
Optimized design of Silicon Carbide (SiC) power devices depends, besides power device physics, also on consideration of basic properties and technological readiness of the material. This paper presents a novel analysis of the dependence of variation
Autor:
P. Sasahara, Janna R. B. Casady, Arnd Dietrich Weber, Erwin Schmitt, Richard L. Woodin, Gary M. Dolny, J. Shovlin, Jeff B. Casady, Tony Witt, Thomas Straubinger
Publikováno v:
Materials Science Forum. :223-226
We report here an anisotropic increase in SiC bulk resistivity by annealing at 1150 °C, and discuss the implications for SiC devices. The increase in resistivity is resistivity dependent and can be (at least) partially reversed by a subsequent annea
Publikováno v:
2014 IEEE Workshop on Wide Bandgap Power Devices and Applications.
Publikováno v:
IEE Colloquium on Integrated Systems for Commercial Remote Sensing Applications.
We describe how ERS and Radarsat radar images are used to map slicks on the ocean surface. Offshore Basin ScreeningTM is the commercial proprietary service that has been created to map slicks routinely. It features the discrimination of those slicks
Publikováno v:
AIP Conference Proceedings.
The S‐PRIME (Space Power Reactor, In‐core, Multi‐cell, Evolutionary) program has identified the cesium reservoir as a critical component requiring experimental validation. A test vehicle to measure the response of the cesium‐intercalated grap
Autor:
Gabor Miskolczy, Tony Witt, Dave Lieb, John McVey, Laurie Hatch, Mohamed S. El-Genk, Mark D. Hoover
Publikováno v:
AIP Conference Proceedings.
The purpose of this experiment is to confirm the operating temperatures and pressures of the cesium graphite integral reservoir design for the Space Power Reactor In‐Core Multicell Evolutionary (S‐PRIME) thermionic reactor. The test will verify t
Publikováno v:
SAE Technical Paper Series.