2024-03-28T18:32:04Zhttps://gredos.usal.es/oai/requestoai:gredos.usal.es:10366/1471442022-02-07T15:41:45Zcom_10366_4531com_10366_4512com_10366_3823col_10366_4532
Bias-dependence of surface charge at low temperature in GaN Self-Switching Diodes
Pérez Martín, Elsa
Íñiguez de la Torre Mulas, Ignacio
González Sánchez, Tomás
Gaquiere, Christophe
Mateos López, Javier
Monte Carlo simulation
Self-switching diodes
Gallium Nitride
Surface effects
[EN]In this work, with the help of a semi-classical twodimensional Monte Carlo (MC) simulator, we study the DC current-voltage curves of Self-Switching Diodes (SSDs) fabricated on an AlGaN/GaN heterostructure from 100 K up to room temperature. Due to the very narrow channel of the SSDs, the presence of surface effects plays a key role not only on their DC behavior but also on their RF detection performance. The evolution with temperature of the negative surface charge density σ at the etched sidewalls of the SSD is the key quantity to explain the measurements. At 300 K, MC simulations with a constant value of σ are able to replicate very satisfactorily the experiments. However, to reproduce the shape of the I-V curve at low temperatures, a more realistic approach, where σ depends not only on T, but also on the applied bias V, is necessary.
2021-09-13
2021-09-13
2021
info:eu-repo/semantics/article
Pérez-Martín, E., Íñiguez-de-la-Torre, I., González, T., Gaquière, C. and Mateos, J. (2021). Bias-dependence of surface charge at low temperature in GaN Self-Switching Diodes. 2021 13th Spanish Conference on Electron Devices (CDE), pp. 90-93, doi: 10.1109/CDE52135.2021.9455737.
http://hdl.handle.net/10366/147144
10.1109/CDE52135.2021.9455737
eng
SA254P18
TEC2017-83910-R
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
IEEE