Journal
MICROELECTRONICS JOURNAL
Volume 40, Issue 3, Pages 410-412Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mejo.2008.06.002
Keywords
HEMT; Surface traps; Hydrodynamic; AlGaN; Modelling
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Computer simulation of an AlGaN/GaN HEMT is carried out using commercially available software DESSIS. Traps located at the top of the AlGaN layer have been identified as being the primary source of electrons in the AlGaN/GaN HEMI Recent experiments have focused on their role in HEMT performance with regard to the virtual gate effect and current collapse. In this work, analysis is carried out on these devices through the development of two different models designed to describe the 2DEG formation. Simulation of these models using the hydrodynamic model, which takes into account heating of the electrons, has been carried out to provide a more detailed understanding of the role of surface traps. (C) 2008 Elsevier Ltd. All rights reserved.
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