https://github.com/devsim/devsim_density_gradient
Quantum Corrections to Drift Diffusion simulation
https://github.com/devsim/devsim_density_gradient
devsim semiconductor tcad
Last synced: about 1 year ago
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Quantum Corrections to Drift Diffusion simulation
- Host: GitHub
- URL: https://github.com/devsim/devsim_density_gradient
- Owner: devsim
- License: apache-2.0
- Created: 2018-07-19T20:31:41.000Z (almost 8 years ago)
- Default Branch: main
- Last Pushed: 2024-01-05T17:50:29.000Z (over 2 years ago)
- Last Synced: 2025-03-23T20:23:47.851Z (about 1 year ago)
- Topics: devsim, semiconductor, tcad
- Language: Python
- Homepage:
- Size: 687 KB
- Stars: 9
- Watchers: 3
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Density Gradient Example
## References
This repository implements the Density Gradient method in a way similar to this paper:
[https://doi.org/10.1080/1065514021000012363](https://doi.org/10.1080/1065514021000012363)
```
@ARTICLE{WettsteinVLSI2002,
author={Andreas Wettstein and Oleg Penzin and Eugeny Lyumkis},
title={Integration of the Density Gradient Model into a General Purpose Device Simulator},
journal={VLSI Design},
volume={15},
number={4},
pages={751--759},
year={2002},
doi={10.1080/1065514021000012363},
}
```
With the insulator boundary condition described in:
[https://doi.org/10.1109/TCAD.2011.2107990](https://doi.org/10.1109/TCAD.2011.2107990)
```
@ARTICLE{GarciaAsenov2011,
author={Garcia-Loureiro, A.J. and Seoane, N. and Aldegunde, M. and Valin, R. and Asenov, A. and Martinez, A. and Kalna, K.},
journal=ieeetcad,
title={Implementation of the Density Gradient Quantum Corrections for 3-D Simulations of Multigate Nanoscaled Transistors},
year={2011},
month=jun,
volume={30},
number={6},
pages={841--851},
doi={10.1109/TCAD.2011.2107990},
ISSN={0278-0070},}
```
## Notes
While there is code for full drift diffusion, it has only been really tested for MOSCAP simulation with coupling of the Potential equation with either the electron or hole density equation.
A description of the derivation of this model is in this document:
[https://github.com/devsim/devsim_misc/blob/main/devsim_docs/TCADdocs.pdf](https://github.com/devsim/devsim_misc/blob/main/devsim_docs/TCADdocs.pdf)
* `test_1D.py` - 1D simulation plots
* `runs.sh` - Runs 1D plots for different doping and oxide thicknesses
* `moscap2d.geo` - 3nm tox from gmsh
* `test_2d.py` - 2d example