Simulation Study on the Breakdown Characteristics of InGaAs/InP Composite Channel MHEMTs with an InP-Etchstop Layer

InP 식각정지층을 갖는 MHEMT 소자의 InGaAs/InP 복합 채널 항복 특성 시뮬레이션

  • Son, Myung Sik (Department of Electronic Engineering, Sunchon National University)
  • Received : 2013.11.12
  • Accepted : 2013.12.16
  • Published : 2013.12.31

Abstract

This paper is for enhancing the breakdown voltage of MHEMTs with an InP-etchstop layer. The fully removed recess structure in the drain side of MHEMT shows that the breakdown voltage enhances from 2 V to 4 V in the previous work. This is because the surface effect at the drain side decreases the channel current and the impact ionization in the channel at high drain voltage. In order to increase the breakdown voltage at the same asymmetric gate-recess structure, the InGaAs channel structure is replaced with the InGaAs/InP composite channel in the simulation. The simulation results with InGaAs/InP channel show that the breakdown voltage increases to 6V in the MHEMT as the current decreases. In this paper, the simulation results for the InGaAs/InP channel are shown and analyzed for the InGaAs/InP composite channel in the MHEMT.

Keywords

References

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