Abstract

The fabrication and characterisation of an inverted high-electron-mobility transistor (HEMT) in the AlInAs/GaInAs-on-InP material system are reported. Inverted HEMTs, which have the donor layer beneath the channel, have the potential for higher transconductance, current gain cutoff frequency, and power gain cutoff frequency than conventional HEMTs because the gate can be placed closer to the two-dimensional electron gas (2DEG).

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