【摘 要】
：
In this work,AlGaN/GaN FinFETs with different fin widths have been successfully fabricated,and the recessed-gate FinFETs are fabricated for comparison.The reces
【机 构】
：
Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices,School of Microelectronics,Xidia
论文部分内容阅读
In this work,AlGaN/GaN FinFETs with different fin widths have been successfully fabricated,and the recessed-gate FinFETs are fabricated for comparison.The recessed-gate FinFETs exhibit higher transconductance value and positive shift of threshold voltage.Moreover,with the fin width of the recessed-gate FinFETs increasing,the variations of both threshold voltage and the transconductance increase.Next,transfer characteristics of the recessed-gate FinFETs with different fin widths and recessed-gate depths are simulated by Silvaco software.The relationship between the threshold voltage and the AlGaN layer thickness has been investigated.The simulation results indicate that the slope of threshold voltage variation reduces with the fin width decreasing.Finally,a simplified threshold voltage model for recessed-gate FinFET is established,which agrees with both the experimental results and simulation results.
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