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HfO 2 ‐insulated gate N‐polar GaN HEMTs with high breakdown voltage
Author(s) -
Meyer D. J.,
Katzer D. S.,
Deen D. A.,
Storm D. F.,
Binari S. C.,
Gougousi T.
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201001080
Subject(s) - materials science , optoelectronics , transistor , breakdown voltage , leakage (economics) , reverse leakage current , schottky barrier , schottky diode , transient (computer programming) , electrical engineering , voltage , engineering , diode , operating system , computer science , economics , macroeconomics
In this paper, we present the first demonstration of a HfO 2 ‐insulated gate N‐polar GaN inverted high‐electron‐mobility transistor (iHEMT). HfO 2 ‐insulated gate devices showed an order of magnitude improvement in reverse‐bias gate leakage current as compared to reference Schottky devices. With the reduced gate leakage current, the insulated gate iHEMTs were able to simultaneously demonstrate breakdown voltages in excess of 130 V and maximum current density of 0.87 A/mm. Pulsed I – V gate‐lag measurements were performed to investigate the drain current transient behavior of these devices.