Demonstration of low leakage current and high polarization in ultrathin AlN/GaN high electron mobility transistors grown on silicon substrate

2011 ◽  
Vol 98 (22) ◽  
pp. 223502 ◽  
Author(s):  
F. Medjdoub ◽  
M. Zegaoui ◽  
N. Rolland ◽  
P. A. Rolland
Author(s):  
Yu-Chen Lai ◽  
Yi-Nan Zhong ◽  
Ming-Yan Tsai ◽  
Yue-Ming Hsin

AbstractThis study investigated the gate capacitance and off-state characteristics of 650-V enhancement-mode p-GaN gate AlGaN/GaN high-electron-mobility transistors after various degrees of gate stress bias. A significant change was observed in the on-state capacitance when the gate stress bias was greater than 6 V. The corresponding threshold voltage exhibited a positive shift at low gate stress and a negative shift when the gate stress was greater than 6 V, which agreed with the shift observation from the I–V measurement. Moreover, the off-state leakage current increased significantly after the gate stress exceeded 6 V during the off-state characterization although the devices could be biased up to 1000 V without breakdown. The increase in the off-state leakage current would lead to higher power loss.


2014 ◽  
Vol 104 (15) ◽  
pp. 153509 ◽  
Author(s):  
YongHe Chen ◽  
Kai Zhang ◽  
MengYi Cao ◽  
ShengLei Zhao ◽  
JinCheng Zhang ◽  
...  

2010 ◽  
Vol 7 (10) ◽  
pp. 2412-2414 ◽  
Author(s):  
Subramaniam Arulkumaran ◽  
Ng Geok Ing ◽  
Vicknesh Sahmuganathan ◽  
Liu Zhihong ◽  
Bryan Maung

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