2-D simulation of kink-related sidegating effects in GaAs MESFETs |
| |
Authors: | Kasuoki Usami Kazushige Horio |
| |
Affiliation: | Faculty of Systems Engineering, Shibaura Institute of Technology, 307 Fukasaku, Omiya 330, Japan |
| |
Abstract: | Sidegating (backgating) effects in a planar structure with sidegate on the same side as MESFET are studied by two-dimensional simulation and the results are compared with those for a structure with a backgate on the back side of the substrate. The kink-related sidegating is reproduced in the planar structure, too. Its mechanism is discussed and is attributed to the change of EL2's role from an electron trap to a recombination center by capturing holes, which are generated by impact ionization and flow into the semi-insulating substrate including EL2 (deep donor). The dependence of shallow acceptor density in the semi-insulating substrate is also studied. It is shown that the kink-related sidegating is less remarkable in the case with lower acceptor density in the substrate. Potential dependence of sidegating effects on the sidegate (backgate) position is also discussed. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|