Lookup NU author(s): Peter Tappin,
Dr Rajat Mahapatra,
Professor Nick Wright,
Dr Alton Horsfall
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This report investigates the advantages of high-k materials as gate dielectrics for high power SiC trench MOSFET devices, by means of TCAD simulation. The study makes a comparison between the breakdown characteristics of gate dielectrics comprising SiO2, HfO2 and TiO 2. I-V and Transfer functions show forward characteristics with on-state resistivity of 8.27 mΩ·cm2, 8.65 mΩ·cm2,15.8 mΩ·cm2 for the respective devices, at a gate voltage of 20 V. The threshold voltage is 10 V for all devices. The blocking voltage for the HfO2 and TiO2 is increased from 1800 V (for the SiO2 device) to 2200 V. With a peak electric field of 12 MV/cm through the oxide of the SiO2 device is reduced to 3.2 MV/cm for the HfO2 and 2.3 MV/cm for the TiO 2 devices.
Author(s): Tappin P, Mahapatra R, Wright NG, Bhatnagar P, Horsfall AB
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 6th European Conference on Silicon Carbide and Related Materials (ECSCRM 2006)
Year of Conference: 2007
Publisher: Materials Science Forum: Trans Tech Publications Ltd
Library holdings: Search Newcastle University Library for this item