Ultra-thin-channelled GaAs MESFET with double-δ-doped layers

Abstract
GaAs MESFETs with double-δ-doped layers have been fabricated with electron-beam-induced resist. The FET is made with the δ-doped channel embedded as shallow as 70 ̇ from the surface, and shows an intrinsic transconductance of 400 mS/mm for a gate length of about 1500 ̇.

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