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- W2001231423 abstract "We report on the reliability of Inx Al1–xN/AlN/GaN-based heterostructure field-effect transistors (HFETs) fabricated on five different wafers with varying indium compositions (0.12 ≤ x ≤ 0.20) encompassing the tensile/compressive strain fields. All of the tested devices underwent high field on-state stress at 20 V DC drain bias and zero gate bias for five hours. We monitored the drain current and low-frequency noise (LFN) a priori and a posteriori the stress treatment to quantify device degradation. HFETs suffering tensile strain showed remarkably large degradation which manifested itself with up to 25 dB increase in noise power and up to 72% loss of drain current after stress. On the other hand, devices fabricated on compressively strained structures remained intact after stress, but they had about 30 dB higher pre-stress noise-power levels and about 50% lower drain-current densities to begin with. The results show that the nearly lattice-matched In0.17Al0.83N barrier exhibited very low degradation along with current density remaining high compared with the devices having barriers with lower or higher indium content. Our results suggest that the nearly-lattice-matched InAlN can be a good candidate for devices due to its relatively better reliability while maintaining a high current density. (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
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- W2001231423 date "2012-03-12" @default.
- W2001231423 modified "2023-09-26" @default.
- W2001231423 title "The effect of barrier strain on the reliability of In x Al1-x N/AlN/GaN heterostructure field-effect transistors" @default.
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- W2001231423 doi "https://doi.org/10.1002/pssr.201206024" @default.
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