In this paper, we show that high-performance β-Ga2O3 hetero-junction barrier Schottky (HJBS) diodes with various β-Ga2O3 periodic fin widths of 1.5/3/5 μm are demonstrated with the incorporation of p-type NiOx. The β-Ga2O3 HJBS diode achieves a low specific on-resistance (Ron,sp) of 1.94 mΩ cm2 with a breakdown voltage of 1.34 kV at a β-Ga2O3 periodic fin width of 3 μm, translating to a direct-current Baliga's power figure of merit (PFOM) of 0.93 GW/cm2. In addition, we find that by shrinking the β-Ga2O3 width, the reverse leakage current is minimized due to the enhanced sidewall depletion effect from p-type NiOx. β-Ga2O3 HJBS diodes with p-type NiOx turn out to be an effective route for Ga2O3 power device technology by considering the high PFOM while maintaining a suppressed reverse leakage current.
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22 March 2021
Research Article|
March 22 2021
β-Ga2O3 hetero-junction barrier Schottky diode with reverse leakage current modulation and BV2/Ron,sp value of 0.93 GW/cm2
Qinglong Yan
;
Qinglong Yan
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Hehe Gong;
Hehe Gong
2
School of Electronic Science and Engineering, Nanjing University
, Nanjing 210023, China
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Jincheng Zhang;
Jincheng Zhang
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Jiandong Ye
;
Jiandong Ye
2
School of Electronic Science and Engineering, Nanjing University
, Nanjing 210023, China
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Hong Zhou
;
Hong Zhou
a)
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
a)Author to whom correspondence should be addressed: hongzhou@xidian.edu.cn
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Zhihong Liu;
Zhihong Liu
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Shengrui Xu;
Shengrui Xu
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Chenlu Wang
;
Chenlu Wang
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Zhuangzhuang Hu
;
Zhuangzhuang Hu
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Qian Feng;
Qian Feng
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Jing Ning;
Jing Ning
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Chunfu Zhang
;
Chunfu Zhang
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Peijun Ma;
Peijun Ma
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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Rong Zhang;
Rong Zhang
2
School of Electronic Science and Engineering, Nanjing University
, Nanjing 210023, China
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Yue Hao
Yue Hao
1
State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University
, Xi'an 710071, China
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a)Author to whom correspondence should be addressed: hongzhou@xidian.edu.cn
Appl. Phys. Lett. 118, 122102 (2021)
Article history
Received:
January 14 2021
Accepted:
March 07 2021
Citation
Qinglong Yan, Hehe Gong, Jincheng Zhang, Jiandong Ye, Hong Zhou, Zhihong Liu, Shengrui Xu, Chenlu Wang, Zhuangzhuang Hu, Qian Feng, Jing Ning, Chunfu Zhang, Peijun Ma, Rong Zhang, Yue Hao; β-Ga2O3 hetero-junction barrier Schottky diode with reverse leakage current modulation and BV2/Ron,sp value of 0.93 GW/cm2. Appl. Phys. Lett. 22 March 2021; 118 (12): 122102. https://doi.org/10.1063/5.0044130
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