Simplified closed‐form trap‐assisted tunneling model applied to nitrided oxide dielectric capacitors

1992 ◽  
Vol 72 (12) ◽  
pp. 5711-5715 ◽  
Author(s):  
S. Fleischer ◽  
P. T. Lai ◽  
Y. C. Cheng
1999 ◽  
Author(s):  
Shiro Kamohara ◽  
Yutaka Okuyama ◽  
Yukiko Manabe ◽  
Kosuke Okuyama ◽  
Katsuhiko Kubota ◽  
...  

2014 ◽  
Vol 778-780 ◽  
pp. 718-721 ◽  
Author(s):  
Shota Nishida ◽  
Jian Bo Liang ◽  
Masashi Morimoto ◽  
Naoteru Shigekawa ◽  
Manabu Arai

The physical and electrical properties of p+-Si/n-4H-SiC and n+-Si/n-4H-SiC heterojunctions fabricated by using surface-activated bonding (SAB) were investigated by scanning electron microscopy (SEM), current-voltage (I-V) and breakdown characteristics measurements at raised ambient temperatures. The I-V characteristics for the reverse bias voltages of the two junctions were compared with the expectations based on Frenkel-Poole, and trap-assisted tunneling models. The results of calculations using the trap-assisted tunneling model were close to the measurements.


2020 ◽  
Vol 10 (13) ◽  
pp. 4475
Author(s):  
Faraz Najam ◽  
Yun Seop Yu

Trap-assisted-tunneling (TAT) is a well-documented source of severe subthreshold degradation in tunneling field-effect-transistors (TFET). However, the literature lacks in numerical or compact TAT models applied to TFET devices. This work presents a compact formulation of the Schenk TAT model that is used to fit experimental drain-source current (Ids) versus gate-source voltage (Vgs) data of an L-shaped and line tunneling type TFET. The Schenk model incorporates material-dependent fundamental physical constants that play an important role in influencing the TAT generation (GTAT) including the lattice relaxation energy, Huang–Rhys factor, and the electro-optical frequency. This makes fitting any experimental data using the Schenk model physically relevant. The compact formulation of the Schenk TAT model involved solving the potential profile in the TFET and using that potential profile to calculate GTAT using the standard Schenk model. The GTAT was then approximated by the Gaussian distribution function for compact implementation. The model was compared against technology computer-aided design (TCAD) results and was found in reasonable agreement. The model was also used to fit an experimental device’s Ids–Vgs characteristics. The results, while not exactly fitting the experimental data, follow the general experimental Ids–Vgs trend reasonably well; the subthreshold slope was loosely similar to the experimental device. Additionally, the ON-current, especially to make a high drain-source bias model accurate, can be further improved by including effects such as electrostatic degradation and series resistance.


2016 ◽  
Vol 115 ◽  
pp. 126-132 ◽  
Author(s):  
Daniele Garbin ◽  
Elisa Vianello ◽  
Quentin Rafhay ◽  
Mourad Azzaz ◽  
Philippe Candelier ◽  
...  

2018 ◽  
Vol 924 ◽  
pp. 601-604 ◽  
Author(s):  
Gary Dolny ◽  
Yang Sheng ◽  
Yue Fu ◽  
S. Li ◽  
Rahul Radhakrishnan ◽  
...  

The reverse-bias current-voltage characteristics of commercial 1200 V 4H-silicon-carbide junction barrier Schottky (SiC-JBS) rectifiers are studied both experimentally and through numerical simulation. The reverse leakage current measured from physical devices is observed to display both a strong temperature and field dependence. A model is presented to explain the observed behavior based on a combination of trap-assisted tunneling and a thermionic-emission mechanism through a potential barrier located at the metal-SiC interface. The study shows that a two-level trapping model can be necessary to properly explain the measured data. Excellent agreement between the models and the measurements is obtained over a wide range of bias and temperature.


2001 ◽  
Vol 45 (8) ◽  
pp. 1361-1369 ◽  
Author(s):  
Daniele Ielmini ◽  
Alessandro S. Spinelli ◽  
Andrea L. Lacaita ◽  
Andrea Martinelli ◽  
Gabriella Ghidini

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