We present a numerical analysis on an ultra-short channel AlGaN/GaN HEMT-like planar Gunn diode based on the velocity-field dependence of two-dimensional electron gas (2-DEG) channel accounting for the ballistic electron acceleration and the inter-valley transfer. In particular, we propose a Schottky-ohmic composite contact instead of traditional ohmic contact for the Gunn diode in order to significantly suppress the impact ionization at the anode side and shorten the “dead zone” at the cathode side, which is beneficial to the formation and propagation of dipole domain in the ultra-short 2-DEG channel and the promotion of conversion efficiency. The influence of the surface donor-like traps on the electron domain in the 2-DEG channel is also included in the simulation.
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7 September 2014
Research Article|
September 04 2014
Ultra-short channel GaN high electron mobility transistor-like Gunn diode with composite contact
Ying Wang;
Ying Wang
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Lin'an Yang;
Lin'an Yang
a)
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Zhizhe Wang;
Zhizhe Wang
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Qing Chen;
Qing Chen
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Yonghong Huang;
Yonghong Huang
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Yang Dai;
Yang Dai
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Haoran Chen;
Haoran Chen
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Hongliang Zhao;
Hongliang Zhao
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Yue Hao
Yue Hao
The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics,
Xidian University
, Xi'an 710071, China
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Ying Wang
Lin'an Yang
a)
Zhizhe Wang
Qing Chen
Yonghong Huang
Yang Dai
Haoran Chen
Hongliang Zhao
Yue Hao
The 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. Electronic mail: [email protected].
J. Appl. Phys. 116, 094502 (2014)
Article history
Received:
July 08 2014
Accepted:
August 23 2014
Citation
Ying Wang, Lin'an Yang, Zhizhe Wang, Qing Chen, Yonghong Huang, Yang Dai, Haoran Chen, Hongliang Zhao, Yue Hao; Ultra-short channel GaN high electron mobility transistor-like Gunn diode with composite contact. J. Appl. Phys. 7 September 2014; 116 (9): 094502. https://doi.org/10.1063/1.4894627
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