GaAs field effect transistors fabricated by imprint lithography
A GaAs metalsemiconductor field-effect transistor (MESFET) has been realized based on mix-and-match fabrication using optical lithography for the ohmic contacts and imprint lithography for the gate. The gate length and width are 1.2 and 80 ?m, respectively, the channel length is 4 ?m. For the gate definition a Si-mold is embossed into a thin polymer film located on top of an n-doped GaAs layer. The gate is fabricated by metal evaporation and lift-off.
imprint lithography mix-and-match fabrication microelectronic devices fet