Abstract
An enhancement-mode pseudomorphic high electron mobility transistor (E-mode pHEMT) with In0.49Ga0.51P/In0.25Ga0.75As/GaAs structure is studied in this paper. The two-dimensional device simulator, MEDICI, is used to solve the Poisson's equation and the electron/hole current continuity equations. An optimized δ-doped InGaP/InGaAs pHEMT structure is found to be superior to the conventional AlGaAs/InGaAs pHEMT. It reveals that the maximum drain-source current (IDS) goes up to 1600mA/mm and transconductance (Gm) is 2120mS/mm.
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