Chen Hao Xia^1*, Leonard Deuschle^1*, Jiang Cao^1*, Alexander Maeder^1*, Mathieu Luisier^1*

1 Integrated Systems Laboratory, ETH Zürich, Gloriastrasse 35, 8092 Zürich, Switzerland

* Corresponding authors emails: chexia@iis.ee.ethz.ch, dleonard@iis.ee.ethz.ch, jiacao@iis.ee.ethz.ch, almaeder@student.ethz.ch, mluisier@iis.ee.ethz.ch

DOI10.24435/materialscloud:sm-90 [version v1]

Publication date: Oct 08, 2024

How to cite this record

Chen Hao Xia, Leonard Deuschle, Jiang Cao, Alexander Maeder, Mathieu Luisier, Influence of carrier-carrier interactions on the sub-threshold swing of band-to-band tunnelling transistors, Materials Cloud Archive 2024.149 (2024), https://doi.org/10.24435/materialscloud:sm-90

Description

Band-to-band tunnelling field-effect transistors (TFETs) have long been considered as promising candidates for future low-power logic applications. However, fabricated TFETs rarely reach sub-60 mV/dec sub-threshold swings (SS) at room temperature. Previous theoretical studies identified Auger processes as possible mechanisms for the observed degradation of SS. Through first-principles quantum transport simulations incorporating carrier-carrier interactions within the Non-equilibrium Green's Function formalism through self-consistent GW approximation, we confirm here that Auger processes are indeed at least partly responsible for the poor performance of TFETs. Using a carbon nanotube TFET as testbed, we show that carrier-carrier scattering alone significantly increases the OFF-state current of these devices, thus worsening their sub-threshold behavior. The results are in the folder uploaded.

Materials Cloud sections using this data

Files

File name	Size	Description
Review_data_MARVEL.zip MD5md5:ffa52a929beaf98590820eb96f3ef6e3	1.4 GiB	Folder containing the DFT, Wannierisation, quantum transport input and output data.
README.md MD5md5:7c6780a9fd7bcb755f0eed17627b4f21	425 Bytes	README file describing the contents of the folder

License

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External references

Keywords

electronic structure transport Wannier functions