Metal semiconductor field effect transistor based on single crystal GaN

In this letter we report the fabrication and characterization of a metal semiconductor field effect transistor (MESFET) based on single crystal GaN. The GaN layer was deposited over sapphire substrate using low pressure metalorganic chemical vapor deposition. MESFET devices were fabricated on isolat...

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Veröffentlicht in:Applied physics letters 1993-04, Vol.62 (15), p.1786-1787
Hauptverfasser: ASIF KHAN, M, KUZNIA, J. N, BHATTARAI, A. R, OLSON, D. T
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container_end_page 1787
container_issue 15
container_start_page 1786
container_title Applied physics letters
container_volume 62
creator ASIF KHAN, M
KUZNIA, J. N
BHATTARAI, A. R
OLSON, D. T
description In this letter we report the fabrication and characterization of a metal semiconductor field effect transistor (MESFET) based on single crystal GaN. The GaN layer was deposited over sapphire substrate using low pressure metalorganic chemical vapor deposition. MESFET devices were fabricated on isolated mesas using TiAu for the source and drain ohmic contacts and silver for the gate Schottky. For devices with a gate length of 4 μm (channel opening, i.e., source to drain separation of 10 μm), a transconductance of 23 mS/mm was obtained at −1 V gate bias. Complete pinch-off was observed for a gate potential of −12 V.
doi_str_mv 10.1063/1.109549
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subjects Applied sciences
Electronics
Exact sciences and technology
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transistors
title Metal semiconductor field effect transistor based on single crystal GaN
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