Freire, Teofilo Cobos;
Mahapatra, Souvik;
Shluger, Alexander L;
(2025)
Atomistic Simulation of Defect Processes Involved in the Reaction-Diffusion-Drift Model of NBTI.
In:
2024 IEEE International Integrated Reliability Workshop (IIRW).
(pp. pp. 1-4).
IEEE: South Lake Tahoe, CA, USA.
Preview |
Text
IIRW_Simulation_of_Defect_Processes_Involved_011024.pdf - Accepted Version Download (10MB) | Preview |
Abstract
Density functional theory (DFT) simulations are used to model hole trapping reactions at hydrogencontaining defects in the bulk of amorphous SiO2 (a-SiO2) in the context of the reaction diffusion drift (RDD) model of NBTI. We report hole trapping, proton dynamics, and hydrogen release mechanisms related to bulk trap generation in the presence of hot holes, involving oxygen vacancies passivated by hydrogen (H2-VO) and water (H2O-VO). The charge transition levels (CTLs) and reaction barriers of these defect processes were calculated to predict their behavior under varying Fermi levels in metal-oxide-semiconductor field-effect transistors (MOSFETs) providing new insights into how these defects evolve during NBTI stress.
| Type: | Proceedings paper |
|---|---|
| Title: | Atomistic Simulation of Defect Processes Involved in the Reaction-Diffusion-Drift Model of NBTI |
| Event: | 2024 IEEE International Integrated Reliability Workshop (IIRW) |
| Dates: | 6 Oct 2024 - 10 Oct 2024 |
| ISBN-13: | 979-8-3315-1716-8 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/IIRW62856.2024.10947139 |
| Publisher version: | https://doi.org/10.1109/iirw62856.2024.10947139 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | DFT calculations; Defect reactions, NBTI, Amorphous SiO2 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10209170 |
Archive Staff Only
 |
View Item |
