Abstract
This paper reports vertical Gallium nitride (GaN) PN diodes on free-standing GaN wafer using a complementary metal-oxide-semiconductor compatible contact materials. Static and switching current-voltage measurements have been carried out to evaluate the fabricated vertical GaN PN diodes. The vertical GaN PN diode in this paper shows turn-on voltage Von of 3.3-3.4 V, on/off current ratio of 2.7 × 107, and ideal factor n of 2.1. The reverse recovery time Trr is 21.2 ns and 23.2 ns, respectively, under a testing temperature of 300 K and 500 K. With an on-state resistance Ron of 3.9 m Ω cm2 and a breakdown voltage VBR of 2.4 kV, this device achieves a power device figure-of-merit VBR 2Ron of 1.5 × 109 V2 Ω-1 cm-2.
Original language | English |
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Article number | 8417418 |
Pages (from-to) | 825-829 |
Number of pages | 5 |
Journal | IEEE Journal of the Electron Devices Society |
Volume | 6 |
DOIs | |
State | Published - 20 07 2018 |
Bibliographical note
Publisher Copyright:© 2013 IEEE.
Keywords
- Free standing gallium nitride (GaN)
- high breakdown voltage
- power p-n diode