Fabrication and low frequency characterization of n-InxAl1- xAs/InyGa1-yAs metamorphic HEMT on GaAs substrate
Abstract
We demonstrate the fabrication and low frequency characterization of n-InxAl1-xAs/InyGa1-yAs Metamorphic HEMT on GaAs substrate. A 20um gate length fabricated MHEMT device operating in depletion mode exhibit a maximum drain current Imax ~ 11.31mA/mm, maximum extrinsic transconductance gain gm~5.43mS/mm and threshold voltage VT ~-3V. This is a proof that metamorphic HEMT on GaAs substrate is possible.








