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- W4282838030 abstract "Abstract In this study, the mechanism of the kink effect observed during the switching operation in AlGaN/GaN high electron mobility transistors is thoroughly analyzed. The I D -V G characteristic shows a drop in I D and a positive shift in V T when kink effect occurs. Then through Silvaco software to simulate the trap position, the negative buffer trap induces the V T to shift positively, dominating the decrease of the I D . By using long term DC stress test under the bias condition where the kink phenomenon occurred, the V T will shift in the negative direction, which shows the hole generated by impact ionization is a key for the kink effect. Furthermore, I D -V G after kink effect stress does not respond to red, green, or blue light illumination but does to UV light, which means that electron de-trap cannot restore the V T shift caused by the kink effect. Finally, the mechanism of the kink effect is completely provided. The recombination of hot holes generated by impact ionization with the electron trapped in buffer defects is the main mechanism for the kink phenomenon." @default.
- W4282838030 created "2022-06-15" @default.
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- W4282838030 date "2022-06-13" @default.
- W4282838030 modified "2023-09-30" @default.
- W4282838030 title "Analysis of the buffer trap-induced kink effect in AlGaN/GaN HEMT on SiC substrate" @default.
- W4282838030 doi "https://doi.org/10.1088/1361-6641/ac7819" @default.
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