Control of Buffer-Induced Current Collapse in AlGaN/GaN HEMTs Using SiNx Deposition
Control of Buffer-Induced Current Collapse in AlGaN/GaN HEMTs Using SiNx Deposition
复制标题
使用 SiNx 沉积控制 AlGaN/GaN HEMT 中缓冲器引起的电流崩塌
DOI:
10.1109/ted.2017.2738669
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发表时间:
2017
影响因子:
3.1
通讯作者:
Martin Kuball
中科院分区:
文献类型:
--
作者:
W. M. Waller;M. Gajda;S. Pandey;J. Donkers;D. Calton;J. Croon;J. Sonsky;M. Uren;Martin Kuball
The stoichiometry of low-pressure chemical vapor deposition SiNx surface passivation is shown to change vertical conductivity at the top of the epitaxial stack in GaN-on-Si power high-electron mobility transistors (HEMTs). This changes the charge stored in the carbon-doped GaN layer during high-voltage operation, and allows direct control of buffer-related current collapse in HEMTs. Substrate bias ramps are used to identify the changes in C:GaN charge trapping and vertical leakage. Channel length dependence indicates a lateral conductivity in the C:GaN with a localized increase in vertical conductivity under the ohmic contacts. An optimum SiNx recipe is identified which simultaneously delivers low current collapse and low drain leakage.
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影响因子:
4.9
作者:
M. Uren;M. Caesar;S. Karboyan;P. Moens;P. Vanmeerbeek;Martin Kuball
通讯作者:
M. Uren;M. Caesar;S. Karboyan;P. Moens;P. Vanmeerbeek;Martin Kuball
影响因子:
3.1
作者:
Uren, Michael J.;Moereke, Janina;Kuball, Martin
通讯作者:
Kuball, Martin
影响因子:
3.1
作者:
Chatterjee, Indranil;Uren, Michael J.;Kuball, Martin
通讯作者:
Kuball, Martin
影响因子:
3.2
作者:
Pooth, Alexander;Uren, Michael J.;Kuball, Martin
通讯作者:
Kuball, Martin
影响因子:
4
作者:
Uren, Michael J.;Caesar, Markus;Kuball, Martin
通讯作者:
Kuball, Martin