Statistical study of the effect of interface charge fluctuations in HEMTs using a 3D simulator |
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| Authors: | N Seoane A J García-Loureiro K Kalna A Asenov |
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| Affiliation: | (1) Department of Electronics and Computer Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain;(2) Device Modelling Group, Department Electronics & Electrical Engineering, University of Glasgow, G12 8LT Glasgow, Scotland, United Kingdom |
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| Abstract: | The intrinsic parameter fluctuations associated with the discreteness of charge and matter become an important factor when
the semiconductor devices are scaled to nanometre dimensions. The interface charge in the recess regions of high electron
mobility transistors (HEMTs) has a considerable effect on the overall device performance. We have employed a 3D parallel drift-diffusion
device simulator to study the impact of interface charge fluctuations on the I-V characteristics of nanometre HEMTs. For this
purpose, two devices have been analysed, a 120 nm gate length pseudomorphic HEMT with an In0.2Ga0.8As channel and a 50 nm gate length InP HEMT with an In0.7Ga0.3As channel. |
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| Keywords: | Intrinsic parameter fluctuations Interface charge HEMT devices Drift-diffusion 3D simulations |
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