Parasitic subthreshold drain current and low frequency noise in GaN/AlGaN metal-oxide-semiconductor high-electron-mobility field-effect-transistors
Parasitic subthreshold drain current and low frequency noise in GaN/AlGaN metal-oxide-semiconductor high-electron-mobility field-effect-transistors
复制标题
GaN/AlGaN 金属氧化物半导体高电子迁移率场效应晶体管中的寄生亚阈值漏极电流和低频噪声
DOI:
10.1088/1361-6641/abce8c
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发表时间:
2020
影响因子:
1.9
通讯作者:
Collaert N
中科院分区:
文献类型:
--
作者:
Takakura K;Putcha V;Simoen E;Alian A R;Peralagu U;Waldron N;Parvais B;Collaert N
The impact of the short gate length on the drain current and low frequency (LF) noise in GaN/AlGaN metal-oxide-semiconductor high-electron-mobility field-effect-transistors has been studied. In some short devices, a parasitic subthreshold current is observed. In this article, the origin of parasitic subthreshold currents were explored using LF noise and trapping transient measurements. The LF noise power spectral density (PSD) of the devices without parasitic drain current decreased monotonically with the decrease of the drain current, while the PSD of the device with the parasitic drain current strongly increased for lower drain current. The 1/f 1.5 noise corresponding with the parasitic leakage can be explained by the level broadening of generation-recombination centers in the GaN channel. This is confirmed by the trapping transient measurements, revealing a temperature-independent time constant, associated with the leakage path in short channel transistors, exhibiting the subthreshold humps.
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影响因子:
2.1
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通讯作者:
M. Wojtowicz
影响因子:
2.3
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Yu;W. Chang;Y. Chang;J. Kwo;Yuan Lin;S. Hsu;J. Hong;C. Tsai;M. Hong
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M. Hong
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影响因子:
1.9
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S. Rumyantsev
影响因子:
4
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W. Lour;W. Chang;Wen;Y. Shie;H. Pan;J. Y. Chen;W. Wang
通讯作者:
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