Investigation of Electrical Properties of N-Polar AlGaN/AlN Heterostructure Field-Effect Transistors
Daisuke Inahara
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorShunsuke Matsuda
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorWataru Matsumura
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorRyo Okuno
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorKoki Hanasaku
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorTaketo Kowaki
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorMinagi Miyamoto
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorYongzhao Yao
Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya, Aichi, 456-0023 Japan
Search for more papers by this authorYukari Ishikawa
Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya, Aichi, 456-0023 Japan
Search for more papers by this authorAtsushi Tanaka
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorYoshio Honda
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorShugo Nitta
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorHiroshi Amano
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorSatoshi Kurai
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorCorresponding Author
Narihito Okada
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorYoichi Yamada
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorDaisuke Inahara
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorShunsuke Matsuda
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorWataru Matsumura
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorRyo Okuno
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorKoki Hanasaku
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorTaketo Kowaki
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorMinagi Miyamoto
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorYongzhao Yao
Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya, Aichi, 456-0023 Japan
Search for more papers by this authorYukari Ishikawa
Japan Fine Ceramics Center, 2-4-1 Mutsuno, Atsuta, Nagoya, Aichi, 456-0023 Japan
Search for more papers by this authorAtsushi Tanaka
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorYoshio Honda
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorShugo Nitta
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorHiroshi Amano
Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Furocho, Chikusa, Nagoya, Aichi, 464-8601 Japan
Search for more papers by this authorSatoshi Kurai
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorCorresponding Author
Narihito Okada
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorYoichi Yamada
Department of Electrical and Electronic Engineering, Yamaguchi University, 2 -16-1 Tokiwadai, Ube, Yamaguchi, 755-8611 Japan
Search for more papers by this authorAbstract
AlN-based field-effect transistors (FETs) enable high-breakdown voltage, high drain current, and high-temperature operation. To realize high-frequency devices, N-polar AlGaN/AlN heterostructure FETs are focused on. N-polar Al0.1Ga0.9N/Al0.9Ga0.1N/AlN FET is fabricated using metal–organic vapor-phase epitaxy, and its electrical characteristics are evaluated. An N-polar AlN layer is grown on a sapphire substrate with a misorientation angle of 2.0° toward m-axis, on which a 20 nm thick Al0.9Ga0.1N base layer and a 20 nm Al0.1Ga0.9N channel layer are grown. The static FET operation is confirmed to exhibit an n-channel and pinch-off. Normally, during operation with a turn-on voltage of −3.2 V, a high operating breakdown voltage of 620 V and high operating temperature of 280 °C are also confirmed.
Conflict of Interest
The authors declare no conflict of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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