RT Journal Article
T1 Design, processing and characterization of delta-doped channel AlGaAs/InGaAs/GaAs HFETs
A1 Miranda Pantoja, José Miguel
AB We report on design, processing and characterization of AlGaAs/InGaAs/GaAs HFETs which feature the power capabilities of double delta-doped devices and the low noise performance of the standard HFETs. To study the influence of delta doping position on the subband energies and sheet charge density, numerical simulations based on a self-consistent solution of Poisson's and Schrodinger's equations have been used for different channel thicknesses. Three different devices with a single delta-doped layer located at three different positions inside the channel have been fabricated and tested. On-wafer noise measurements have revealed that the position of the delta-doped layer can be optimized to minimize the noise figure without any relevant degradation of the maximum transconductance. The device with the delta-doped layer closer to the bottom heterointerface was found to exhibit the best performance in terms of the maximum cutoff and maximum oscillation frequencies and the minimum noise figure.
PB Iop Publishing Ltd
SN 0268-1242
YR 2000
FD 2000-07
LK https://hdl.handle.net/20.500.14352/58948
UL https://hdl.handle.net/20.500.14352/58948
LA eng
NO © 2000 IOP Publishing Ltd.
DS Docta Complutense
RD 25 abr 2025