Leakage Current Reduction in Planar AlGaN/GaN MISHEMT with Drain Surrounded by the Gate Channel

被引:0
|
作者
Sun, Hui [1 ]
Chen, Jianguo [1 ]
Wang, Maojun [1 ]
Liu, Meihua [1 ]
Lin, Xinnan [1 ]
Chen, Dongmin [1 ]
机构
[1] Peking Univ, Chen Acad Adv Interdisciplinary Studies, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
关键词
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暂无
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A new planar MISHEMT structure is proposed with the drain surrounded (D-S) by the gate channel. The gate channel serves as the stop-ring of the drain voltage, eliminating the damages from the high voltage on the mesa edge and isolation area. As a result, the leakage of the D-S MISHEMT is found to be reduced by almost 3 orders comparing with the source surrounded (S-S) MISHEMT. A saturated output current density of 740 mA/mm and an ON-resistance of 13.09 Omega.mm are obtained for device with LG/LGS/LGD/WC = 1.5/5/20/250 mu m. Meanwhile, the degradation of dynamic ON-resistance and off-state breakdown performance are investigated in both D-S and S-S MISHEMT, which indicates excellent reliability of the D-S MISHEMT.
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页码:186 / 188
页数:3
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