Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N45: Energy - General
11:30 AM–2:06 PM,
Wednesday, March 8, 2023
Room: Room 315
Sponsoring
Unit:
GERA
Chair: Rohit Pant, University of Maryland
Abstract: N45.00001 : Stable Contact Development for High-Temperature β-Ga2O3 Device Operation
11:30 AM–11:42 AM
Presenter:
Will Callahan
(Colorado School of Mines)
Authors:
Will Callahan
(Colorado School of Mines)
David S Ginley
(National Renewable Energy Laboratory)
Andriy Zakutayev
(National Renewable Energy Laboratory)
Michael Sanders
(Colorado School of Mines)
Ryan O'Hayre
(Colorado School of Mines)
In addition to thermodynamic stability issues, many metallic Schottky contacts have shown difficulty maintaining high rectification ratios at useful voltage ranges due to the strong temperature dependence of reverse-bias carrier generation (i.e., thermionic and field emission). We explore the use of an oxidation step for various Schottky metals (e.g., Cr, Ni) to fabricate diodes that improve the high-temperature rectification stability of the diode while maintaining a reasonably low turn-on voltage.
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