Journal
APPLIED PHYSICS EXPRESS
Volume 12, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/1882-0786/ab0181
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Funding
- MOE Tier 1 [R-263-000-C58-133]
- NUS Hi-FES Program [R-263-501-006-731]
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High temperature performance of Ga2O3 metal-oxide-semiconductor field-effect transistors (MOSFETs) was investigated at temperatures of 25 degrees C-300 degrees C. A 30.7% on-state current reduction was observed when the temperature increased from 25 degrees C to 300 degrees C. On-state current and peak intrinsic transconductance decreased when temperature increases and followed a power law, indicating that high temperature electron mobility is limited by phonon scattering. Threshold voltage also shift positively with an increase rate of similar to 2.3 mV degrees C-1 when the temperature increased. In terms of off-state currents, traps with an activation energy of 0.42 eV were responsible for increased off-state current at high temperature and high drain voltage regime. (C) 2019 The Japan Society of Applied Physics
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