Abstract
The origin of the substrate current in nMOSFET after hard gate oxide breakdown is studied as a function of the breakdown position. The breakdown path is modeled by a narrow (∼5 nm diameter) inclusion of highly doped n-type silicon in SiO2. Device simulations excellently reproduce all post-breakdown nMOSFET characteristics, including the substrate current behavior, for both gate-to-substrate and gate-to-extension breakdowns. The model also identifies the origin of impact ionization and recombination observed in emission spectra.
Original language | English (US) |
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Pages (from-to) | 155-160 |
Number of pages | 6 |
Journal | Microelectronic Engineering |
Volume | 59 |
Issue number | 1-4 |
DOIs | |
State | Published - Nov 2001 |
Event | 12th Biannual Conference on Insulating Films on Semi-Conductors (INFOS 2001) - Udine, Italy Duration: Jun 20 2001 → Jun 23 2001 |
Keywords
- Bipolar transistor
- Device simulation
- Gate oxide breakdown
- Hot electron effects
- Impact ionization
- MOSFET
- Recombination
- Substrate current
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Electrical and Electronic Engineering